Data types : 

A characteristic of PL/I that contributes to the range of applications for which it can be used is the variety of data types that can be represented and manipulated. Data types include:

• Real or complex, floating-point or fixed-point, signed or UNSIGNED binary or DECIMAL, and numeric and EDITABLE picture data with programmer selected precision.
• Varying or nonvarying, character or bit or GRAPHIC, run-time adjustable or compile-time fixed length strings.
• Program control data supporting pointer and offset locators, adjustable or fixed size areas for grouping of dynamic allocations, entry data ("function pointers"), and file, label, and format data.

Areas may be written out to the disk and READ back at a later date permitting preservation of linked-lists.

Data types : 

A characteristic of PL/I that contributes to the range of applications for which it can be used is the variety of data types that can be represented and manipulated. Data types include:

Areas may be written out to the disk and read back at a later date permitting preservation of linked-lists.