A Condition object lets you choose whether a HTML source block should or should not be "displayed" in the Web page presented in the browser.
By inserting a Condition object, an opening <adelia:b_cond/> 
tag and a closing <adelia:e_cond/> 
tag are created.
The condition is linked to an Adelia Boolean variable (guide word for the variable defined by the name attribute). Before displaying a block contained between condition-setting tags, the variable is evaluated. If this is evaluated as *TRUE, then the block will form part of the page shown in the browser, otherwise it will be omitted.
The presence of an <adelia:b_cond/> tag determines a link with the Adelia Web program to which the current HTML page belongs.
The condition-setting tag creates a Boolean variable in the program's data environment, for which the identifier is given by the name attribute.
Click below:
to see an example,
for more information on inserting a condition.