The template:
#block content This page is under construction. #end block
The output:
This page is under construction.
This construct generates a method .content
in the same structure
as .printArg
above, containing the write code:
write('This page is under construction.\n')
In the main method, the write code is:
self.content(trans=trans) # generated from ('content', '#block content') # at line 1, col 1.
So a block placeholder implicitly passes the current transaction to the method.