Introduction - logic works features, limitations in this version, organization of this manual, notes regarding copyright; getting started - installation, the setup file; tutorial - the 5-minute schematic and simulation, schematic editing, digital simulation, advanced examples; user interface - mouse button usage, dialogue boxes, window usage, keyboard usage, tool palette and status display, use of the pointer or cursor; creating the schematic, drawing structure, types of objects in a circuit, selecting and placing devices, drawing grid, selecting circuit objects, repositioning the entire circuit, placing random text on the diagram; signals - drawing signals, editing signal lines, interconnecting signals, setting signal parameters, naming signals; devices - classes of devices, editing devices, device libraries; simulation - circuit Window simulation controls, device simulation characteristics, the I/O panel, parts of the I/O panel Window, the timing diagram; PROM and PLA devices - general description of PROM and PLA types, creating a PROM or PLA device, reading an external PROM/PLA data file, using the PLA or PROM device, editing the PROM or PLA device data, PROM/PLA examples; primitive devices - the Gates library, the generic library, the I/O library, user-definable primitives; menu reference - the apple menu, the file menu, the edit menu, the drawing menu, the options menu, module menu, window menu, libraries menu, library maintenance functions; the device editor - introduction, installation, entering the device editor, creating a new device type, editing an existing type, selecting an internal circuit, assigning a behavioural model, the DevEditor Window, the DevEditor menu, file menu, automatic symbol generator; creating text reports - report format options, creating netlists for SPICE, SPICE netlist example; MacABEL interface - installation, using from Abel, characteristics of FromAbel, unsupported PLDs, from Abel errors. Appendices: setup file format; inside logic works; internal error detection; keyboard shortcuts; PLA data file format; PRO, data file format.