davidvossel/pacemaker — comment on commit ca9344593dd11c47922dff4f1b809b590697deaf
File: include/crm/pengine/status.h line 195
By beekhof:

Grepping the code we can see what it does, better to explain why, eg.

pe_action_requires_any = 0x01000, /* Action requires only one of its dependancies to be runnable
* We use this to clear the runnable flag before checking dependancies in update_action()
*/