The param parameter

In a param or paramH parameter, the first character is the field separator (`:' here). The first field is the type of the first component (M, L, B, C or T), followed by its n parameters in the forthcoming n fields. Then the same for the second component, etc. Component parameters:

:M:width:height

width and height are in pixel units.

:L:fontprops

fontprops: font properties.

:B:fontprops::
:B:fontprops:description:
:B:fontprops:description:frame

fontprops: font properties,
description: description string,
target: target frame for the URL ("_self" = show in the window and frame that contain the applet, "_parent" = show in the applet's parent frame, "_top" = show in the top-level frame of the applet's window, "_blank" = show in new window).

:C:fontprops:
:C:fontprops:description

fontprops: font properties,
description: description string.
You may specify the checkbox group number in the type field, by writing gn next to the type-specifying character C, where n is the group number. No more than one button in a group can be pressed at the same time.

:T:fontprops
:T:fontprops:columns
:T:fontprops:columns:editable

fontprops: font properties,
columns: number of columns,
editable: editable (rw) or read only (r).

The fontprops field usually contains only one number, the font size. Additional properties are "b" (bold font) and "i" (italic). A 12pt bold italic font is specified as "12bi".

Example:

<param name="param" value=":
M:100:100:
L:10b:
C:10:select this molecule:
Cg0:10:include this structure:
B:10:search for more molecules like this:_self:
T:10:
T:10:15:
T:10:15:rw">