Control Source Properties . Normally, this is a table field, but you may need to write code to get data from someplace else, or send it to somewhere besides a field. Format and Caption Properties . These control the display of data and text, such as its size, font, color, visibility, location on a form, and so on. Most of these properties are chosen from a list of standard values, but you may want to write snippets of programs to dynamically change these properties.
Objects have properties.
The designer sets design-time properties. Run-time properties are changed as the system is running, based on some event or condition. Most of the time, you will be working with modules connected to a particular form or report, and often a particular object on the form or report. Those connected to an event are stored under the name of the object and the event. You may also create modules not connected to objects.