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This chapter describes interfaces to popular IC layout formats available in Toped. All conversions follow the template described below.
- Import
- External formats are imported in two stages. First comes the file parsing. After the parsing the user can browse the data base hierarchy and obtain basic information about the database contents. The conversion comes next and the user can select to translate only part of the database. Layer correspondence between the TDT and the external database is normally required at this stage.
![[Note]](images/note.png) | Note |
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Two-step import process allows also to map cell (structure) names between the TDT and the external data base. This functionality is not yet fully implemented for all intefaces. |
- Export
- The exporting process is a bit simpler and executes in a single step. TDT database can be exported as a whole or partially. Layer maps are normally also required.