Here is a complete list of RunCommand constants with a description of their function where I know what they do. The list in Access Help and the one obtainable on the Microsoft Web Site are incomplete and contradict one another.
I have colour coded the list dependent on the version in which they first appeared - Access 97, Access 2000, Access XP, Access 2003, Access 2007 or Access 2010. Prior to Access 2007, all later versions of Access recognise the earlier commands. See Known Problems for more details. Some of these were retained for backwards compatibility only. If you spot any errors or can fill the gaps please let me know.
links to code examples for that constant. Select the start letter, ignoring the acCmd, of the constant.