3D-Spreadsheets-Setting Transparency to sheets

hi, Is there an in-built way API, Macro, etc. to set Transparency to sheets in Calc in LibreOffice? And change level with slider same as Magnification property? You can use external programs and two windows of two different sheets of same spreadsheet file and manually move one over the other in

Calc-Edit Picture with External Tool

hi, Is there a way to set up Right Click -Edit Picture With External Tool in Calc the same way as in Writer? This is useful for correcting OCR outputs of external programs. Original pictures are pasted into Calc and Arranged to Background . Line numbers can be entered into celss and row heights