Using this option, you can define / modify symbols of axes, levels, and sections used in elements of an RC structure. 
To begin defining styles, open the Styles of symbols dialog from: 
- Menu Formwork Drawings > Styles > Styles - graphic symbols 
 
- Ribbon: ASD - Drawings > Settings > Styles > Styles - graphic symbols 
 
- Command line: RBCT_DEF_SYMBOL_STYLE. 
 
Under Symbol, there are several types available: 
- Axis 
 
- Elevation mark 
 
- Elevation mark in views 
 
- Section symbol 
 
- Opening symbol in view 
 
- Opening symbol in section 
 
- Symbol of main direction of the slab 
 
- Detail symbol. 
 
For every symbol type, a standard style has been defined. After highlighting a symbol type and a symbol style, a preview displays. 
Use the buttons on the right to work with symbols: 
- Default - click this to restore a default (standard) symbol of an axis, level, or section. 
 
- New - click this to open a dialog (Axis , Section symbol, Opening symbol in view, Opening symbol in cross-section, Symbol of main direction of the slab, Detail symbol or Elevation marks on plans/Elevation mark) where you can define a new style of the selected symbol type (based on the existing style). 
 
- Modify - click this to open a dialog ( Axis , Section symbol, Opening symbol in view, Opening symbol in cross-section or Elevation marks on plans/Elevation mark) where you can modify a selected symbol type. 
 
- Delete - click this to delete a highlighted symbol style.