Initializing help system before first use

# setmatherr

Purpose
Raise a Math error.
Synopsis
`procedure setmatherr(msg:string)`
Argument

msg | Error message to display (or an empty string)

Further information
If mathematical errors are not handled by the model (see mathctrl), the execution is interrupted. A function ending with a call to this routine may set its return value to NAN or INFINITY in order to indicate its error status.
Related topics
setioerr, isnan, isinf, isfinite.
Parent Topic Predefined functions and procedures

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