I am puzzled why so many toolsets do the following (where xyz is toolset name):<br><br>toolset.inherit xyz : unix ;<br>generators.override builtin.lib-generator : xyz.prebuilt ;<br>generators.override xyz.searched-lib-generator : searched-lib-generator ;<br><br>What motivates the override statements and what do they do?&nbsp; Are they necessary?<br><br><br>Thanks,<br>Mark<br>