D..17 July, 2005 (AE Version 3.79)

• Added support and instructions for ``stacking'' sources (§7.1.1).

• Added support for new CIAO tool mkacisrmf (§7.9). CIAO version 3.2.2 and the corresponding CALDB update (June 2005) are required if you want to use mkacisrmf. Note that the energy range of the RMF is chosen to be 0.3 to 9.886 to deal with a quirk in the mkwarf program (CXC Helpdesk Ticket #7870).

• Added explanation of how ARFs are combined in MERGE_OBSERVATIONS stage (§5.9).

• Changed convention for contents of optional input INDEX_FILE in /SHOW_REGIONS from zero-based indexing to one-based indexing to be more compatible with line numbers when viewing a catalog in a text editor.