When you invoke a function, task, or procedure in Verilog or VHDL, Sigasi will list that function’s signature. The signature of a function shows the function’s name, arguments, and return type. It’s shown in a pop-up window that appears once you type an open parenthesis.
As you move your cursor around, it’ll highlight the current argument even when nesting brackets. You can press the arrows on the left-hand side to navigate between all available signatures matching this function name.
The Signature Helper also activates when instantiating a VHDL entity or a Verilog module by listing the ports, parameters, or generics of that module or entity.
If you accidentally closed the signature helper via the Esc key, you can trigger it again using Ctrl+Shift+Space .