Greek letters and overlay

[ivory4]

Q1: Are greek letters allowed in the text attached to graph or lines?

Q2: Also how to shade an intersection area using overlay=polygon ?

I try to shade the area between y=-1-x; y=-x/(x+1); y=1; x=0;

Code: Select all

@gridseries(from=-2.00,to=1.00,size=0.01,pts=ngrid) yy

set pneg 1 200 = -1-yy
set p 51 351 = -1*(yy)/(yy+2)
set new 1 100 = 1.0
set new 101 200 = p
scatter(style=line,overlay=polygon,ovsame) 2
# yy new 1 200
# yy pneg 1 200

But this does not cover what I need.
Any suggestions?

Similar issues like shading intersection between y=x^2, and y=x^1/2