Am Tue, 25 May 2010 18:17:09 +0200 schrieb Pablo Rodríguez: > On 05/25/2010 05:28 PM, Ulrike Fischer wrote: >> Am Tue, 25 May 2010 17:12:08 +0200 schrieb Pablo Rodríguez: >> >>> (I know that \makeatletter ends with \makeatother, >>> although I'm not sure what are they used for ;-).) >> >> Well \makeatletter makes @ (at) to a letter, which means that you >> can use commands with @ in their names (command names end at the >> first non-letter char), \makeatother makes @ to a "non-letter". > > Thanks for your clear explanation, Ulrike. > > But naming commands with @ is only a convention, isn't it?
It shows that a command is an internal command and that "the normal user" should be careful (and need to know how to make @ to a letter) before redefining it. The latex3 code use : and _ as "letters" for the same purpose: e.g. "\msg_kernel_new:nnnn" is a latex3 command. -- Ulrike Fischer -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
