There are several methods for selecting and deselecting entries.

Select a single entryClick anywhere on the entry except on the Expand/Collapse arrow and Sort buttons. If the entry contains other entries, they are all selected.

In Titles and List View mode, a selected entry is light grey. On proxies, the name bar is yellow.

When an entry contains some selected entries, but not all of them, its Expand or Collapse arrow is yellow. When all of an entry's contained entries are selected, its Expand or Collapse arrow is green.

Select all entries contained in an entryClick the top-level entry.

Select a top-level entry only Alt-click the top-level entry. When you Alt-click the entry, its contained entries are not selected.

Selecting an entry without its contained entries is useful when you want to transfer entries between libraries using Wire. The library structure can be preserved without transferring clips.

Deselect one or more entries Ctrl-click a selected entry.

Add more entries to a selection Ctrl-click the entries you want to add.

Select a range of entriesIn Titles and Proxies modes, click the first entry in the range, then press Shift and click the last entry in the range.

In List View, you can also drag the cursor over the range of entries or Shift-click the first and last entry in the range.

Add a range of entries Ctrl-click the first entry in the range you want to add to your current selection. Ctrl+Shift-click the last entry in the range you want to add.

In List View, Ctrl -drag to select more entries.

Select all entries in the clip libraryClick the Select All button in the Library Management menu. Alternatively, click the clip library entry.

Deselect all entriesClick the Unselect All button in the Library Management menu. Alternatively, click anywhere within the solid grey area of the clip library.