If you have ever tried (unsuccessfully) to make heads or tails out of a long list of similar file names when you're in Column View mode (that's the mode on the far right of the View Selector), Apple has thoughtfully built in a quick fix in OS X! Down at the bottom of the vertical column divider bar, under the up and down scroll buttons, you'll see two small vertical lines. Double-click on that and the column will magically expand enough to fit in the longest file name in the list. This is particularly handy when you are searching for a specific sample or audio file from a long list of similarly named items, such as "Steinway Grand G#3 soft.wav". If you Option-double-click on the tab, all of the columns expand to show you the longest name in each of the columns.

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