What is this newcommand argument?












2















newcommand*{name}[1][C]{%


I have come very familiar with newcommand however, I came across this line of code and i do not know what the [C] is for.






macros arguments







share|improve this question









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  • 2





    Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

    – marmot
    3 hours ago











  • latexref.xyz/…

    – Henri Menke
    3 hours ago











  • @HenriMenke Is there a more modern link in which things like it do not get advertized?

    – marmot
    3 hours ago











  • @marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

    – Henri Menke
    2 hours ago






  • 2





    Possible duplicate of newcommand argument confusion

    – Alan Munn
    44 mins ago
















2















newcommand*{name}[1][C]{%


I have come very familiar with newcommand however, I came across this line of code and i do not know what the [C] is for.






macros arguments







share|improve this question









New contributor




Jesus Escareno is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
















  • 2





    Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

    – marmot
    3 hours ago











  • latexref.xyz/…

    – Henri Menke
    3 hours ago











  • @HenriMenke Is there a more modern link in which things like it do not get advertized?

    – marmot
    3 hours ago











  • @marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

    – Henri Menke
    2 hours ago






  • 2





    Possible duplicate of newcommand argument confusion

    – Alan Munn
    44 mins ago














2












2








2








newcommand*{name}[1][C]{%


I have come very familiar with newcommand however, I came across this line of code and i do not know what the [C] is for.






macros arguments







share|improve this question









New contributor




Jesus Escareno is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct. 












newcommand*{name}[1][C]{%


I have come very familiar with newcommand however, I came across this line of code and i do not know what the [C] is for.






macros arguments




macros arguments






share|improve this question









New contributor




Jesus Escareno is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Jesus Escareno is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 47 mins ago









Werner

440k669691662




440k669691662






New contributor




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asked 3 hours ago









Jesus EscarenoJesus Escareno

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111




New contributor




Jesus Escareno is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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New contributor





Jesus Escareno is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Jesus Escareno is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.








  • 2





    Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

    – marmot
    3 hours ago











  • latexref.xyz/…

    – Henri Menke
    3 hours ago











  • @HenriMenke Is there a more modern link in which things like it do not get advertized?

    – marmot
    3 hours ago











  • @marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

    – Henri Menke
    2 hours ago






  • 2





    Possible duplicate of newcommand argument confusion

    – Alan Munn
    44 mins ago














  • 2





    Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

    – marmot
    3 hours ago











  • latexref.xyz/…

    – Henri Menke
    3 hours ago











  • @HenriMenke Is there a more modern link in which things like it do not get advertized?

    – marmot
    3 hours ago











  • @marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

    – Henri Menke
    2 hours ago






  • 2





    Possible duplicate of newcommand argument confusion

    – Alan Munn
    44 mins ago








2




2





Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

– marmot
3 hours ago





Welcome to TeX.SE! This means in this case that name has one optional argument whose default value is C.

– marmot
3 hours ago













latexref.xyz/…

– Henri Menke
3 hours ago





latexref.xyz/…

– Henri Menke
3 hours ago













@HenriMenke Is there a more modern link in which things like it do not get advertized?

– marmot
3 hours ago





@HenriMenke Is there a more modern link in which things like it do not get advertized?

– marmot
3 hours ago













@marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

– Henri Menke
2 hours ago





@marmot Well, it etc. are commands provided by the standard LaTeX classes, so naturally they would be listed in a reference manual. However, you can contribute and remove them latexref.xyz/dev/writing.html

– Henri Menke
2 hours ago




2




2





Possible duplicate of newcommand argument confusion

– Alan Munn
44 mins ago





Possible duplicate of newcommand argument confusion

– Alan Munn
44 mins ago










1 Answer
1






active

oldest

votes


















3














LaTeX's newcommand has the following syntax:




newcommand *{<FOO>}[<i>]{<TEXT>}


User command to define FOO to be a macro with i arguments (i = 0 if missing)
having the definition <TEXT>. Produces an error if FOO already defined.
Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
and a blank line in any argument to the command would generate an error.




If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



So, as an example, consider



newcommand{FOO}[2]{<TEXT>}


This command has two mandatory arguments and is therefore used as FOO{<one>}{<two>}. However,



newcommand{FOO}[2][X]{<TEXT>}


takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO{<one>} (which is equivalent to FOO[X]{<one>}) or FOO[<one>]{<two>}. Similarly,



newcommand{FOO}[1][X]{<TEXT>}


takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




In your particular case,



newcommand*{name}[1][C]{<TEXT>}


defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



Reference:




  • LaTeX2e sources


  • What do newcommand, renewcommand, and providecommand do, and how do they differ?


  • What is the difference between def and newcommand?







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    1 Answer
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    1 Answer
    1






    active

    oldest

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    active

    oldest

    votes






    active

    oldest

    votes









    3














    LaTeX's newcommand has the following syntax:




    newcommand *{<FOO>}[<i>]{<TEXT>}


    User command to define FOO to be a macro with i arguments (i = 0 if missing)
    having the definition <TEXT>. Produces an error if FOO already defined.
    Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
    and a blank line in any argument to the command would generate an error.




    If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



    So, as an example, consider



    newcommand{FOO}[2]{<TEXT>}


    This command has two mandatory arguments and is therefore used as FOO{<one>}{<two>}. However,



    newcommand{FOO}[2][X]{<TEXT>}


    takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO{<one>} (which is equivalent to FOO[X]{<one>}) or FOO[<one>]{<two>}. Similarly,



    newcommand{FOO}[1][X]{<TEXT>}


    takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




    In your particular case,



    newcommand*{name}[1][C]{<TEXT>}


    defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



    Reference:




    • LaTeX2e sources


    • What do newcommand, renewcommand, and providecommand do, and how do they differ?


    • What is the difference between def and newcommand?







    share|improve this answer




























      3














      LaTeX's newcommand has the following syntax:




      newcommand *{<FOO>}[<i>]{<TEXT>}


      User command to define FOO to be a macro with i arguments (i = 0 if missing)
      having the definition <TEXT>. Produces an error if FOO already defined.
      Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
      and a blank line in any argument to the command would generate an error.




      If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



      So, as an example, consider



      newcommand{FOO}[2]{<TEXT>}


      This command has two mandatory arguments and is therefore used as FOO{<one>}{<two>}. However,



      newcommand{FOO}[2][X]{<TEXT>}


      takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO{<one>} (which is equivalent to FOO[X]{<one>}) or FOO[<one>]{<two>}. Similarly,



      newcommand{FOO}[1][X]{<TEXT>}


      takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




      In your particular case,



      newcommand*{name}[1][C]{<TEXT>}


      defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



      Reference:




      • LaTeX2e sources


      • What do newcommand, renewcommand, and providecommand do, and how do they differ?


      • What is the difference between def and newcommand?







      share|improve this answer


























        3












        3








        3







        LaTeX's newcommand has the following syntax:




        newcommand *{<FOO>}[<i>]{<TEXT>}


        User command to define FOO to be a macro with i arguments (i = 0 if missing)
        having the definition <TEXT>. Produces an error if FOO already defined.
        Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
        and a blank line in any argument to the command would generate an error.




        If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



        So, as an example, consider



        newcommand{FOO}[2]{<TEXT>}


        This command has two mandatory arguments and is therefore used as FOO{<one>}{<two>}. However,



        newcommand{FOO}[2][X]{<TEXT>}


        takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO{<one>} (which is equivalent to FOO[X]{<one>}) or FOO[<one>]{<two>}. Similarly,



        newcommand{FOO}[1][X]{<TEXT>}


        takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




        In your particular case,



        newcommand*{name}[1][C]{<TEXT>}


        defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



        Reference:




        • LaTeX2e sources


        • What do newcommand, renewcommand, and providecommand do, and how do they differ?


        • What is the difference between def and newcommand?







        share|improve this answer













        LaTeX's newcommand has the following syntax:




        newcommand *{<FOO>}[<i>]{<TEXT>}


        User command to define FOO to be a macro with i arguments (i = 0 if missing)
        having the definition <TEXT>. Produces an error if FOO already defined.
        Normally the command is defined to be long (i.e. it may take multiple paragraphs in its argument). In the star-form, the command is not defined as long
        and a blank line in any argument to the command would generate an error.




        If you define a command with at least one argument (i > 0), you can specify an additional (optional) argument before the definition <TEXT>. This optional argument will be used as the "default" value for a first optional argument to FOO.



        So, as an example, consider



        newcommand{FOO}[2]{<TEXT>}


        This command has two mandatory arguments and is therefore used as FOO{<one>}{<two>}. However,



        newcommand{FOO}[2][X]{<TEXT>}


        takes two (2) arguments, the first of which is optional and has a default of X (if not supplied). You can use it as FOO{<one>} (which is equivalent to FOO[X]{<one>}) or FOO[<one>]{<two>}. Similarly,



        newcommand{FOO}[1][X]{<TEXT>}


        takes a single (1) optional argument that has a default value of X (if not supplied) and can be used as FOO (which is equivalent to FOO[X]) or FOO[<one>].




        In your particular case,



        newcommand*{name}[1][C]{<TEXT>}


        defines name to (be non-long; that is, <TEXT> cannot have blank lines and) take a single (1) optional argument that defaults to C if not supplied. You can use it as name (which is equivalent to name[C]) or name[<one>].



        Reference:




        • LaTeX2e sources


        • What do newcommand, renewcommand, and providecommand do, and how do they differ?


        • What is the difference between def and newcommand?








        share|improve this answer












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        share|improve this answer










        answered 47 mins ago









        WernerWerner

        440k669691662




        440k669691662






















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