Input to the assembler is a text file consisting of a sequence of statements. Each statement ends with the first occurrence of a newline character (ASCII LF), or of a semicolon (;) that is not within a string operand or between a slash and a newline character. Thus, it is possible to have several statements on one line.
To make programs easy to read, understand and maintain, however, it is good programming practice not to have more than one statement per line. As indicated above, a line may contain one or more statements. If several statements appear on a line, they must be separated by semicolons (;).