英文版pml学习资料.pdfVIP

PML Basics Part 1 - 10-25-2006 Alright expert and cvitte71, I did promise to get more involve with pdmsworld. So here we go. I will start adding new thread for those who want to learn PML, starting with the basics (PML 1) working my way to PML2, forms, functions, you get the idea. To start out, I wanted to introduce the Dollar $ symbol and its meanings $M = Runs a macro in pdms $! = Evaluate a varieble $. = Terminates a macro $S = Defines a synonym $G = Defines a global synonym $S- = Turns synonyms o $S+ = Turns synonyms On $QS = Quearys the synonyms $H = Help $Q = Another syntax help $P = Prints a line to your command line $$ = Adds a $ symbol $D = Default argument value $* = Comment line $( = Starts a comment block $) = Ends a comment block To turn the pml trace on and o I use $R To turn trace O $R6 To turn trace On $R109 Another neat trick that I like to use, especially when using the trace is ALPHA REQ CLEAR (I will get more into this as I add more and more treads) This command cleans your command line. I really hope everyone gets involve and If i miss anything please added to the tread. A query on usage in the field: how much do you use the $ comments (either $* or $(...$) )? (For those of you at the ISEITs this is to do with Published PML...) I want to be able to strip comments when publishing the PML, and am wondering just how much trouble to go to with wierdly nested and hidden comments! (I will never mangle anything, but might not strip all the comments if you do really odd things) I use the $* comments as much as possible. Specially because Im the kind of person who will write a macro and forget about it and 6 months later someone is asking me to add some new function to the macro. I try to add as much comments for my own personal benefit. If you are new to pml and you want to make life easier. I suggest you try to comment as much as possible. Also, name you macros something that will make since 6month