I'm surely not the only person who finds this order of params impossible to remember:
// Load node.admin.inc from the node module.
module_load_include('inc', 'node', 'node.admin');
Let's pick that apart:
we load:
PATH/node/node.admin.inc
1 /2 /3 .4
and the params to the function are:
module_load_include(4, 2, 3)