How to plot large format drawing on a small format printer?
Use the following trick to print tiled AutoCAD drawing e.g. on a A4-size printer.
ePlot your drawing - plot or publish your drawing to a .DWF format. Start Autodesk DWF Viewer (free CAD viewer, see Downloads) and in the Print dialog select your output format. Use Display tiles to see the dividing lines between print tiles. Print these tiles to your small printer (or fax).
How to keep AutoCAD hatch boundary visible?
Use the DRAWORDER command to bring the boundary to front. In AutoCAD 2005 (and higher) you can force the hatchure (esp. SOLID hatch) to stay 'behind' its boundary - see the "Send behind boundary" or "Send to back" options in the 'Draw Order' pane of the 'Boundary Hatch and Fill' dialog.
How to convert a series of TEXT objects to a single MTEXT object?
You can use the TXT2MTXT utility/command which is a part of Express Tools (separate installation/product; now included with AutoCAD 2004, 2005, 2006, 2007).
Error in the ac1st16.dll file trying to run AutoCAD, LT or Desktop
You are attempting to run a "2004" application on a unsupported operating system (Win9x, WinME). Or in your PATH the C:\Program Files\Common Files\Autodesk Shared folder is missing.
How to convert a 3D perspective view to a 2D drawing?
You can plot out your 3D view to a .DXB file and then read it back using the _DXBIN command.
How to quickly create an outline of a closed area?
You can use the _BOUNDARY (_BPOLY) command to create a boundary polyline (or region) along the outline lines of a closed area (around a specified point).