
plmtex3: Write text relative to viewport boundaries in 3D plots 

DESCRIPTION:

    This function is used in example 28. 

SYNOPSIS:

plmtex3(side, disp, pos, just, text)

ARGUMENTS:

    side (const char *, input) :    Specifies the side of the viewport
    along which the text is to be written. The string should contain
    one or more of the following characters: [xyz][ps][v].    Only one
    label is drawn at a time, i.e. xyp will only label the X axis, not
    both the X and Y axes. x: Label the X axis. 
        y: Label the Y axis. 
        z: Label the Z axis. 
        p: Label the primary axis. For Z this is the leftmost Z axis.
        For X it is the axis that starts at y-min. For Y it is the
        axis that starts at x-min. 
        s: Label the secondary axis. 
        v: Draw the text perpendicular to the axis. 


    disp (PLFLT, input) :    Position of the reference point of string,
    measured outwards from the specified viewport edge in units of the
    current character height.  Use negative disp to write within the
    viewport. 

    pos (PLFLT, input) :    Position of the reference point of string
    along the specified edge, expressed as a fraction of the length of
    the edge. 

    just (PLFLT, input) :    Specifies the position of the string relative
    to its reference point.  If just=0., the reference point is at the
    left and if just=1., it is at the right of the string.    Other
    values of just give intermediate justifications. 

    text (const char *, input) :    The string to be written out. 
