deletions | additions       diff --git a/layout.md b/layout.md  index 7fc6d87..1209350 100644  --- a/layout.md  +++ b/layout.md 
...
begin_verbatim_def_make_bias_n__.tex  The_creation_of_a_master__.tex  begin_verbatim_def_make_flat_filter__.tex  Finally_we_process_the_image__.tex  begin_verbatim_def_process_image_hdu_bias__.tex