AIX 4.1.5: Using a One-button Mouse

When using a single-button mouse in AIX 4.1.5 how do you simulate the 2nd and the 3rd mouse buttons as it is different from AIX 4.1.4 or 4.1.4.1.
AIX 4.1.5AIX 4.1.4 & 4.1.4.1
Published Date: Feb 18, 2012