This use case came up in Item881:

1. Multiple attachment tables can be on one page, so the attachment twisty cannot have a fixed id
2. The state of having the attachment twisty opened or closed should be set site-wide, not per topic

The current implementation is as follows:

1. If for TWISTY the param id is set, that id is used
2. If no id is set, a generic id is created, based on web, topic and twisty order
3. If for TWISTY the param remember is set to on, the twisty state is stored in a cookie, with the preference name based on the id

We need a creative solution to let this all work together.

-- ArthurClemens - 15 Jun 2009

I am pondering to append a sequential number to the id. That would make the id unique. Possibly only works for TWISTY, not for TWISTYBUTTON and TWISTYTOGGLE, because these may be located elsewhere on the page.

-- ArthurClemens - 01 Sep 2009

That did the trick. It works automatically for TWISTY; for TWISTYBUTTON and TWISTYTOGGLE you still need to create your own unique id.

-- ArthurClemens - 02 Sep 2009