dlen

Thx for the quick and correct answer. Looks as if I single and double clicked everywhere on the layer rectangle except on the area you mentioned. Sorry for the inconvenience! Going to work my way through the help now.

action is --> ..., result is <-- ... comment is | ... --> add levels layer using ctrl L <-- dialogue window and levels layer appear | ok --> do some levels manipulation, i.e. reduce white limit | works --> klick on background layer <-- levels dialogue window disappears | ok so far --> klick on levels layer again <-- nothin happens | dialogue window should reappear here --> klick on "adjustment" tab, then on "levels" tool <-- levels dialogue reappears, but with changes undone | would expect previous changes to be recalled --> add second levels layer via ctrl L | ok so far --> do some manipulations there | works --> klick on basis layer <-- levels dialogue window disappears | we had that --> klick on first levels layer <-- nothing happens | ok that doesnt work, we know that --> klick on "adjustment" tab, then on "levels" tool <-- dialogue for first levels layer reappears, settings deleted as before | nothing new --> klick on second levels layer <-- dialogue for second levels layer appears, setting are those done before | aha! with this detour the settings can be accessed!!