FMSLogo Code

Minor fixes:
* Translate linkend text: CASEIGNOREDP -> IGNORAMAYUSCULAS?
* Fix procedure name in example: ANTERIOR -> ANTERIOR?

Add an indexterm for the Spanish name: TIENEBARRA?

Fix untranslated procedure name in example: TO -> PARA

Fix the link text in the "See Also" section: IGUAL? -> IGUALES?

Fix the name in the title and synopsis to match its actual translation.
AÑADELINEALISTBOX -> AÑADECADENALISTBOX

Remove trailing whitespace.

Remove trailing whitespace

Remove spurious line break after <synopsis> tag.

Fix untranslated procedure name in example: OPENMIDI -> ABREMIDI

Fix untranslated link text: CHDIR -> CAMBIADIR