Autodesk 00128-051462-9310 User Guide - Page 475

Component Fields in Layer Standards Each layer standard defines the number of component fields that make up a layer name and specifies the rules for the content allowed in each field. If you create or edit a layer standard, you access the layer standard properties to edit the component fields. Component Field Descriptions Each layer standard contains the following component fields. Value Field Name Optional Max Width Fixed Width Wildcard Match Description Description Identifies the field. Field names should be as consistent as possible across layering systems to aid in translation. When Yes, allows the field to be omitted from the end of the layer name. Optional layer fields cannot precede a required layer field unless the match option is Yes so that the fields can be identified according to a match against specific descriptions. Represents the maximum width in characters that can be used. When Yes, prevents a field from being shortened from the max width setting. An AutoCAD wildcard pattern that the field must match. When Yes, recognizes the field only if it exactly matches a description. You can omit fields from the middle of layer names. For example, an AIA layer may be made up of , or , or , as the field may not precede the field and can be determined only by matching the field value against valid field descriptions. NOTE When omitting fields from layer names, verify that the omitted field Match Description property is No. This ensures that the layer name specified can be created. Delimiter Default Specifies the character used to separate fields with no fixed width. Delimiters are often also used in fixed-width fields for clarity. A predefined value for those field names that are not optional within the layer. For more information about the content of specific layer standards, see "AIA Long Format Layer Standard" on page 436 and "Editing Component Fields" on page 438. Component Fields in Layer Standards | 435