Just a note to add, that \showinjector doesn't seem to do anything unless you also have a \setinjector command, which is a bit counterintuitive since probably the first thing you want to do is see the ID of each line in your list/register before you know what \setinjector command you need.

I've worked around it by adding

\setinjector[register][1][\relax]

after \showinjector.

On Fri, 9 Oct 2020 at 07:25, Duncan Hothersall <dh@capdm.com> wrote:
Brilliant, thanks, I didn't know about that one. Much appreciated.

Duncan

On Thu, 8 Oct 2020 at 21:36, jbf <roma83537@gmail.com> wrote:

Duncan, have you looked at https://wiki.contextgarden.net/Command/setinjector?

You might also need \showinjector. But it should work for indexes (register).

Julian

On 9/10/20 2:58 am, Duncan Hothersall wrote:
Fine tuning column and page breaking in an index. This is tricky, because there are usually very few "good" places to break an index, and automatic breaking seems to alter slightly depending on whether interactions are set up or not, but is there a way to manually insert a column or page break into the register before or after a certain entry, the way there is for a table of contents?