FUNCTION: Texer - produce TeX output

CALLING SEQUENCE:

Texer(expr)

TEX[Texer](expr)

PARAMETERS:

expr = any expression

SYNOPSIS:

• The Texer function produces ouput suitable for TeX printing for the expression expr.

• This is the same function as TEX[Tex] without options.

• One may only use this function in a user defined function called within a call to the Tex function since the Tex function sets some variables !

• This function does not reset the execution. It means that we do not start a new expression: it is very important to understand this since you have to use this function when you write your own `TeX/Userdefined.../...` functions. Indeed, in such functions you want to TeX a sub expression and not a new one. So, take care to use the appropriate function !

• Whenever there is a conflict between the function name Texer and another name used in the same session, use the long form TEX['Texer'].

EXAMPLES:

> with(TEX):
> Texer(b);
Error, (in ERR[TEXPerror]) problem occured in procedure Texer,
Trying to call Texer() out of a Tex() call...