In developing a notebook, I often find I have created a very boated file that takes a long time to save. I would like to slim it down. It is usually the result of graphics and images, but they may be hidden deep in the hierarchy of the notebook. Finding the wasted space is a pain. A very useful tool would be something that graphically indicated (perhaps in the cell marker) the number of bytes (or similar) that are within a cell. Anyone know of such a thing, or have a pointer on how to create?
I frequently need to type in some matrices, and the menu command Insert > Table/Matrix > New... allows matrices with lines drawn between columns and rows, which is very helpful. I would like to make a keyboard shortcut for it, but cannot find the relevant frontend token command (4209405) for it. Since the FullForm[] and InputForm[] of matrices with lines drawn between rows and columns is the same as those without lines, it's hard to do this via 3rd party system-wide text expanders (e.g. autohotkey or atext on mac). How does one assign a keyboard shortcut for the menu item Insert > Table/Matrix > New... , preferably using only mathematica? Thanks! Answer In the MenuSetup.tr (for linux located in the $InstallationDirectory/SystemFiles/FrontEnd/TextResources/X/ directory), I changed the line MenuItem["&New...", "CreateGridBoxDialog"] to read MenuItem["&New...", "CreateGridBoxDialog", MenuKey["m", Modifiers-...
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