
plgchr: Get character default height and current (scaled) height 

DESCRIPTION:

    This function is used in example 23. 

SYNOPSIS:

plgchr(p_def, p_ht)

ARGUMENTS:

    p_def (PLFLT *, output) :     Pointer to default character height (mm). 

    p_ht (PLFLT *, output) :    Pointer to current (scaled) character
    height (mm). 
