Project files and directories are subdirectories of your AppMaster Builder project directory.
| Directory | Description |
| AMSERV | Used for Assembler |
| APRAPPL | Required by Project Explorer |
| APRINV | Required by the Documentation Facility, to enable generation of reports MD01, EN01, and GS01 |
| APRPROG | Required by Program Painter |
| APSAPPL | Required by Project Explorer |
| APSCNDT | No longer supported - was for Scenario Painter |
| APSCNIO | No longer supported - was for Scenario Painter |
| APSDATA | Required by Data Structure Editor |
| APSEXPS | Required by Online Express |
| APSPROG | Required by Program Painter |
| APSREPT | Required by Report Painter |
| APSSCFE | Screen field edits |
| APSSCRN | Screen field edits |
| APSSRC | Source coded outside the AMB painters is stored in APSSRC. Because the source must be coded in strict AMB S-COBOL syntax, it must therefore be processed by the AMB precompiler |
| APXAPPL | Contains XML files used by the AMB Analysis Option |
| APXPROG | Contains program inventory files |
| CNTL | User control statements. |
| COBCICS | Resolved COBOL output from AMB precompiler |
| COBDLG | Generated COBOL for DLG target |
| COBIMS | Generated COBOL for IMS target |
| COBISPF | Generated COBOL for ISPF target |
| COBMVS | Generated COBOL for MVS target |
| COPYLIB | Standard COBOL copybooks |
| DBDSRC | DBD source files |
| DDIFILE | Index to all DDI files |
| DDIMETA | Contains metadata, including source location, for each generated data view and each data view imported from DDISYMB |
| DDISRC | IMS DDI source |
| DDISYMB | Symbol output from data view generation |
| DDIVSAM | VSAM DDI source |
| FMPOUT | Required by AMB generators |
| GENDLG | Panel output from AMB generators |
| GENMFS | Panel output from AMB generators |
| GENBMS | Target folder when save BMS is selected |
| GENPANEL | target folder when save PANEL is selected (not available in the current IDE) |
| GENSRC | Generated S-COBOL code |
| PSBSRC | PSB source files |
| SCRCOPY | Not used |
| SCRSYMB | Required by AMB Screen Painter |
| SQLDDL | Required for SQL DDL Importer |
| SQLGEN | Required for SQL DDL Importer |
| SQLSCHEM | Contains CREATE SUBSCHEMA code for each SQL DDL and SQL Object |
| USERMACS | Rules created by AMB users |