- " Paper_columns form the top-most item parent. (The Paper_columns X\n"
-" parent is System, which is a spanner.)\n"
-"\n"
-" Paper_columns form the units for the spacing engine. They are\n"
-" numbered, the first (leftmost) is column 0. Numbering happens before\n"
-" line-breaking, and columns are not renumbered after line breaking.\n"
-"\n"
-" Since many columns go unused, you should only use the rank field to\n"
-" get ordering information. Two adjacent columns may have\n"
-" non-adjacent numbers.\n"
-"\n"
-" Don't be confused by right-items: each spacing wish can also contain\n"
-" a number of items, with which a spacing constraint may be kept. It's\n"
-" a little baroque, but it might come in handy later on?\n"
-"\n",
- "between-cols between-system-string when bounded-by-me shortest-playing-duration shortest-starter-duration");
-
+ "@code{Paper_column} objects form the top-most X-parents for items."
+ " The are two types of columns: musical columns, where are attached to, and "
+ " non-musical columns, where bar-lines, clefs etc. are attached to. "
+ " The spacing engine determines the X-positions of these objects."
+
+ "\n\n"
+ "They are\n"
+ " numbered, the first (leftmost) is column 0. Numbering happens before\n"
+ " line-breaking, and columns are not renumbered after line breaking.\n"
+ " Since many columns go unused, you should only use the rank field to\n"
+ " get ordering information. Two adjacent columns may have\n"
+ " non-adjacent numbers.\n",
+
+
+ "between-cols "
+ "bounded-by-me "
+ "page-penalty "
+ "shortest-playing-duration "
+ "shortest-starter-duration "
+ "used "
+ "when ");