EndPage In Pagedevice

There are rules set by Adobe when you are using  /EndPage  and /BeginPage 

You mus create both of them otherwise an error will occure!

There are values placed on the stack when you call/create these procedures and the application (your code)  must consume them!

There are limitation on what you can do in these procedures and better you read the RedBook -

For example

in /EndPage

The procedure must return a boolean value (true or false)  which specifying whether to print the page or not !!

the PS Engine expect to find that logical vlaues at the end - if there is no logical value as error will be generated !

Dr.  Adam