Insert > Table/Matrix > Add Column (Mathematica Menu Item)

Add Column adds a column at the cursor's insertion point in a table or matrix.

Insert > Table/Matrix > Add Row (Mathematica Menu Item)

Add Row adds a row at the cursor's insertion point in a table or matrix.

Insert > Cell with Same Style (Mathematica Menu Item)

Cell with Same Style creates a cell below the current cell with the same cell style.

[Right-click] > Copy Address (Mathematica Menu Item)

Copy Address copies the address of the selected (or clicked upon) hyperlink to the clipboard.

Insert > Typesetting > End Subexpression (Mathematica Menu Item)

End Subexpression moves the cursor from a subexpression to the expression at the n\[Null]^th level.

Edit > Enter Selection (Mathematica Menu Item)

Enter Selection places a selection into the Search for: field of the Find dialog box.

Cell > Convert To > InputForm Display (Mathematica Menu Item)

InputForm Display displays the selection in Mathematica InputForm without interpreting it.

Evaluation > Kernel Configuration ... (Mathematica Menu Item)

Kernel Configuration Options opens a dialog to add, remove, or edit kernel configurations.

Insert > Table/Matrix > Make Spanning (Mathematica Menu Item)

Make Spanning combines the selected entries from a formatted grid into a single spanning entry.

Edit > Make Template (Mathematica Menu Item)

Make Template inserts a template based on a selected function name.