There are three places you can use placeholders: top-level position, expression position and LVALUE position. Each has slightly different syntax rules.
Top-level position means interspersed in text. This is the only place
you can use the placeholder long form:
Expression position means inside a Cheetah expression, which is the same as a Python expression. The placeholder names a searchList or other variable to be read. Expression position occurs inside () and arguments within placeholder tags (i.e., a placeholder inside a placeholder), and in several directive tags.
LVALUE position means naming a variable that will be written to. LVALUE
is a computer science term meaning ``the left side of an assignment
statement''. The first argument of directives
#attr is an LVALUE.
This stupid example shows the three positions. Top-level position is shown
courier, expression position is italic, and LVALUE position is
#for $count in $range($ninetyNine, 0, -1)
#set $after = $count - 1
$countbottles of beer on the wall.
$countbottles of beer!
Take one down, pass it around.
$afterbottles of beer on the wall.
The output of course is:
99 bottles of beer on the wall. 99 bottles of beer! Take one down, pass it around. 98 bottles of beer on the wall. 98 bottles of beer on the wall. 98 bottles of beer! Take one down, pass it around. 97 bottles of beer on the wall. ...