LsBox? Argh. That's particularly sad when you can save the position of a moveable xlabel with a single line of code (plus a few aliases), as I do with my to-do list:

todoOnMove !ParseEvars !execute [!saveSetting todoX %#todoCurrentX%#][!saveSetting todoY %#todoCurrentY%#]

The aliased bang commands are:

*alias !reloadTEM !NetReloadModule $texteditModule$
*alias !unloadTEM !NetUnloadModule $texteditModule$
*alias !saveSetting !execute [!setEvar %1 %2][!reloadTEM][!xtextSaveEvar @$settingsFile$@ @%1@ @%2@][!unloadTEM]

That onMove line was originally posted by xcal in the "Code' section, BTW. =)