How to make two-columns wide figure heading on a two-column page?

I went back and looked at this some more. I've been popping two-column

wide graphics-with-captions into my documents for ages, using the

AutoText plugin. I assumed they were set up as described previously, but

I looked more closely at this, and I amusing a one-cell table (with

table title holding the caption) in my documents, and everything

stretches fine across both columns. It turns out that you don't need to

put the image and caption or figure header in a separate paragraph to

make both image and title stretch across both columns.

Here's the trick. Insert a single-cell table on a page with a master

page style that has only one column. Turn on the table title. The table

title will stretch across the whole page. The table cell may not. If

necessary, control-click the table cell to select it and drag the right-

or left-hand borders to the edge of the column, so that the cell is also

frame wide. Now, you have a single-cell table with title that is as wide

as two columns. Set up your Anchor paragraph format in the table cell

(to hold the graphic) and your caption or figure header format in the

table title area. Save the table as a new table format, possibly calling

it "2-column." Now, you can go to any two-column page and insert a table

with "2-column" format and it (and title) will stretch across both

columns automatically.

If I understand correctly, the simple answer should be to go into the

Paragraph Designer, on the Pagination tab, and set the paragraph format

to be "Across All Columns" for your figure heading paragraph format.

This should make it stretch across both columns.

If you are using the common method of placing graphics in a one-cell

table, and using the table title to hold either the caption or figure

heading, there does seem to be a quirk, though. Placing a two-column

wide graphic stretches fine across both columns, but the table title

(caption) seems to want to stay in only one column. In that case, you

will have to turn off table titles and put the caption or figure heading

in a separate paragraph that either follows or precedes the paragraph

holding the graphic. And set it to "Across All Columns," as described

above. Autonumbering will work fine that way, too.

Perhaps some useful tips in A way to label graphics?