In software development:
Design time: prior to compile
Run time: after compile, while program is running
Break time: pausing the execution of code during the debugging process
Development modes:
In visual studio, the current mode is specified at the title bar.
In visual studio, the toolbar provides three buttons that let you change quickly from one mode to another.
The availablity of these buttons is dependent on whether Visual Basic is in run-time mode, design-time mode, or break mode.
Lists the buttons available for different modes.
Mode Toolbar buttons available
Design time Start
Run time Break, End
Break Continue, End (in break mode, the Start button becomes the Continue button)
For more information, see here.
