Compiler is licensed for Administrator but not for User -- Why?

General Questions:
Are the compilers ANSI C?
What microcontrollers do you support?
Do you support 64-bit double precision floating point math?
Where do I start? I just want to write a simple program!
I try to compile one of the example programs, but something about the "paths" is incorrect.
Is the library source code available?
How do I build my own libraries?

Assembly:
Can I write in assembly code?
How do I add an assembly file to the project?
The compiler emits a warning "empty declaration" for inline asm statement, what is the problem?

Printing:
How do I get printf/puts to work? What if I want to use printf on a LCD? What if I want to use printf on two UARTs?
How do I get both carriage return and linefeed when outputting a '\n' character?
printf() or puts() is displaying weird characters
How comes when I use printf(), '\n' does not move the cursor to the right place in the terminal window?
How come when I use printf("%f", 1.0) (or any floating with .0 as the decimal part), the output is only "1" and not "1.0"
When I try to use printf with precision or width specifier, or long variable, or float variable, it does not work. Why?

Global Variables:
How do I handle global variables in a multi-file project?
What does "undefined global symbol" mean?
What does "multiply defined global symbol" mean?

Error Messages and Warnings:
What does "area bss (or data) not large enough" mean?
What does "area text not large enough" mean?
What does the message "idata must be contiguous" mean?

Unexpected Behaviors:
Programs using "#pragma ...." do not behave correctly
How come the mouse scroll wheel doesn't work in the editor?
Using TextPad on Windows XP
IDE -- Search: "Find" has a different behavior than "Find In Files"

New Answers: -- these are not yet categorized
Is there any performance optimization for the ISR?
Operand not in direct page
Can not use terminal in ICC IDE. Open com-port fails with: "device already open"
Register Allocation -- [AVR] [MSP430] [ARM]
Size discrepancy between (.mp) MAP file and X bytes variable