Use this option to define the reinforcement and the reinforcement distribution (by deselecting active variables that are initialized based on the defined syntax). After completing definition of a distribution and its parameters, the following dialog displays:
Radial distributions
A description of the radial distribution is always an arc-shaped line presenting an angular or linear spacing between bar ends. A dimension line may be complete (describes a distribution along its entire circumference) or partial (describes indicated bars in a part of the region and has arrowheads on its ends pointing where it continues along the circumference).
A description syntax for radial bars contains an additional variable (%deg) describing an angular spacing between bars.
Polar distributions
Polar distributions are defined with division into zones. A description of distributed bars is a (straight) dimension line.
The dialog provides the following options:
- The Active option, specifies the current position of a reinforcement when preparing a reinforcement table, used to avoid duplicating the same reinforcement in calculations.
- Icons used to display distribution:
- all elements are presented in a drawing of a given reinforcement distribution. 
- only the middle representative of a distribution in a given zone is presented (the remaining elements are not visible). 
- only the extreme elements of a distribution in a given zone are presented (the remaining elements are not visible). 
- indicates graphically the distribution elements. - The User description field enables adding any text to a reinforcement description. The text is added to the selection list, and it is also possible to use a text from the library of standard descriptions. These descriptions assume a text style of the reinforcement description. The description displays in several lines; then the mechanisms accessible in AutoCAD® are used. The user description together with an extension line and label make up one object. Such an object may be edited (translation, rotation), by clicking the EXPLODE option.
A description is assigned to a defined distribution of reinforcing bars sector by sector (a sector is a part of a contour, automatically recognized by the program, with a similar distribution).