Tag: programming languages

It should be easy to write programs that process XML documents

Optional features should be kept to a minimum, ideally zero

XML documents should be human legible and reasonably clear

None

Optional but makes a document more portable

Highly discouraged by W3C standards

Recommended for HTML programming only

None

parenthesis

'greater-than and less-than signs'

single or double quotes

brackets

ALL , AUTOMATIC , USER

AUTO , SYS , LOCAL

ALL , LOCAL ,USERDEFINED

ALL , AUTO , GLOBAL

%'

%%'

(apostrophe) '

(percent) %

True

False

1

0

undefined

any integer value

title "Total Sales for ’&month’ ";

title "Total Sales for ’month’";

title "Total Sales for &month";

title Total Sales for "&month";

Sales Report for Southeast Area

Sales Report for "Southeast" Area

Sales Report for "Southeast" Area

• Sales Report for "Southeast" Area *

A macro variable can be defined and referenced anywhere in a SAS program except within data lines. within the data lines of a DATALINES statement.

Macro variables are always user-defined, and their values remain constant until they are changed by the user.

Macro variables are text strings that are independent of SAS data sets.

The values of macro variables can be up to 65,534 characters long.