Usage of statements, operators and keywords specific to ActionScript 2 does not allow to migrate to ActionScript 3. This includes "intrinsic" keyword, set variable statement and following list of operators:

• <> (inequality) - use != instead
• add (concatenation (strings)) - use + instead
• eq (equality (strings)) - use == instead
• ne (not equal (strings)) - use != instead
• lt (less than (strings)) - use < instead
• le (less than or equal to (strings)) - use <= instead
• gt (greater than (strings)) - use > instead
• ge (greater than or equal to (strings)) - use >= instead
• and (logical and) - use && instead
• or (logical or) - use || instead
• not (logical not) - use ! instead

The following code snippet illustrates this rule:

if (true != false) { // Compliant
}

if (true <> false) { // Non-compliant
}

set("varName", value); // Non-cmpliant
varName = value; // Compliant