Progress: controller program.

Progress: controller program.

Change "timeout" property to the more generic "number".
This can then be used for types "timeout" and "item", whereas the "item" number represents the location within the items list.
This is not known until all entry items are loaded and is therefore updated during the pre-process phase.

This implements the pre-process phase after the load phase.
The pre-process will perform additional checks, such as determining if "ready" is set somewhere in the active chain.
This makes sure recursion to an item already on the stack is not allowed.

Do some cleanups, reducing the if/then nesting by adding "do nothing" comment and letting the "else" condition handle the case appropriately.

Internally, line counting starts at 0, but when dealing with presenting the lines to users, the lines start at 1.
Change the behavior to increase the line number appropriately for entries.
The same will likely need to be done for rules.

Have the default.entry provide "ready".