The CDC's recommendation that doctors give every pregnant woman a Tdap vaccination during every pregnancy â regardless of whether a woman has already received one dose of Tdap â is an off-label use of the vaccine.
Literals and Constants in C#. Literal is a source code representation of a value, i.e. it is a value that has been hard-coded directly into your source. x is a variable, and 100 is a literal.
The %LET statement is very often the first macro language statement that is learned. It is roughly the macro language. equivalent of the of the DATA step's assignment statement. One of the easiest ways to define a macro variable is through the %LET statement. (Macro language statements always start. with a %).