The LINES and SIZE values describe the size of the button's title area. The LINES value describes the height of the title area. The SIZE value is the width of the title area, using the width of the "0" (zero) character as the base unit. Added to the title area is overhead for the push button's border. The exact size of the border area is system-dependent. Note that the title area may be larger than the actual title. The title itself is centered both vertically and horizontally in the title area.
When the program executes on a non-graphical system, the values specified in the CLINES and CSIZE phrases, if present, are used in place of the values specified by the LINES and SIZE phrases.
The default LINES value is "1". The default SIZE value is "8".
When the BITMAP style is used, the LINES and SIZE values have a different meaning. The values are the number of pixels in the height and width of the bitmap image (see Chapter 3, section 3.8, for details). If omitted, the default values depend on the host system. Under Windows, the default LINES value is "15" and the default SIZE value is "16". These correspond to the size of buttons typically found on a toolbar.