Cordatus

Autocad

BP.lsp - Break a polyline at a specific point.
BUNITS.lsp - Change de units of all blocks in the drawing.
CTV.lsp - Copies a object to the vertices of a selected polyline.
DELBLOCKS.lsp - Remove all traces of a selected block from the drawing.
DELSHAPE.lsp - Deletes all shapes in the drawing that do not have a file definition.
DELXDATA.lsp - Deletes all X data from drawing (removes error AcDbBlockTableRecord on refedit).
EFROZEOFF.lsp - Erases all objects on frozen/off layers, then purges drawing.
EXDWG.lsp - Open Windows Explorer to the current drawing folder.
HATCHMAKER.lsp - Creates hatches from a drawing with points and lines.
ICS.lsp - Select objetcts inside a polyline
MALHA.lsp - Creates grid lines with northing and easting.
NUM.lsp - Fast dynamic numbering qith prefix and suffix.
PLD.lsp - Remove excess vertices of a polyline.
RSHX.lsp - Remove unknown .shx files.
RXL.lsp - Reset layer properties of xref dependent layers to match the properties presented in xref file.
TAREA.lsp - Calculates the total area of selected objects.
TLEN.lsp - Calculates the total lengh of selected objects.
UNANON.lsp - Converts all annonymous blocks to normal blocks.
VPOUTLINE.lsp - Creates a polyline in modelspace that has the outline of the selected viewport.

AECCVIEWPORTOPT - Labels disappear while working in a drawing after updating to Civil 3D 2023 or later.
ALIGNSPACE - Adjusts the pan and zoom factor of a view in a layout viewport.
BURST - Explodes blocks, converting attribute values to text objects.
CHSPACE - On a layout, transfers selected objects between model space and paper space.
LAYDEL - Deletes all objects on a layer and purges the layer.
MPEDIT (not PEDIT) - Edits multiple polylines; also converts multiple line and arc objects to polyline objects.
NCOPY - Copies objects that are contained in an xref, block, or DGN underlay.
PSELECT - Allows to select objects and keeping them highlighted.
QSELECT - Creates a selection set based on filtering criteria.
SAVEALL / CLOSEALL / QQUIT - Saves, closes or do both to all open drawings.
SNAPANG - Sets the snap and grid rotation angle for the current viewport relative to the current UCS.
SSX - Creates a selection set that contains objects that are either exactly like the selected "template" object.
TORIENT - Rotates text, mtext, attribute definitions, and blocks with attributes for readability.
XLIST - Lists the type, block name, layer name, color and linetype of a nested object in a block or an xref.
MAPWSPACE

DBLCLKEDIT - Controls the double click editing behavior in the drawing area.
FILEDIA - Suppresses display of file navigation dialog boxes.
INDEXCTL - Controls whether layer and spatial indexes are created and saved in drawing files (useful for XREF).
LAYOUTREGENCTL - Specifies how the display list is updated in the Model tab and layout tabs.
PICKFIRST - Controls whether you can select objects before you start a command.
PLINEGEN - Controls how linetype patterns generate around the vertices of a 2D polyline when it is drawn.
PUBLISHCOLLATE - Controls whether plotting a sheet set, multi-sheet plot file, or plot spool file can be interrupted by other plot jobs.
PSLTSCALE - Controls the linetype scaling of objects displayed in paper space viewports.
RIBBONCONTEXTSELECT - Controls how ribbon contextual tabs are displayed when you click an object.
SSMAUTOOPEN - Controls the display behavior of the Sheet Set Manager when a drawing associated with a sheet is opened.
VISRETAIN - Controls the properties of xref-dependent layers.
VPROTATEASSOC - Controls whether the view within a viewport is rotated with the viewport when the viewport is rotated.
XCLIPFRAME - Determines whether xref clipping boundaries are visible or plotted in the current drawing.
(dictremove (namedobjdict) "ACAD_DATALINK") - Remove data links
(foreach lay (layoutlist)(command "_LAYOUT" "_Set" lay "PSLTSCALE" 1))

When asked to make a selection set in a command, if you have already made a selection set of objects, you can use those objects by entering P <enter>.
About CAD Standards
Adding AutoCAD Format menu to a Civil 3D workspace
Assigning Optional Properties to a Part Size / Listing and Adding Dynamic Part Properties

lgumas coisinhas bem interessantes que eu desenvolvi:

Alguns aplicativos para AutoCAD bem úteis:

DGN Purge Hotfix - Remove linhas DGN e reduz enormemente o tamanho do desenho, para AutoCAD 2014, 2013 e 2012. (2011: aqui)
Ductil CAD - Biblioteca de blocos de peças de ferro fundido para saneamento da PAM Saint Gobain. (programa grátis!)
Script Pro - Execute comandos no AutoCAD em diversos desenhos especificando um arquivo de script e a lista de desenhos. (programa grátis!)

Alguns programas muito bons:

Global Mapper - Software que permite alterar datuns de desenhos e convertê-los entre DWG, KMZ e Shapefile. (pago)
SPLOT - Software para visualizar arquivo PLT. Também permite plotar e converter para PDF. (pago)

Algumas normas técnicas de desenhos:

NBR 6.492:1994 – Representação de projetos de arquitetura – Procedimento
NBR 8.196:1999 – Desenho técnico – Emprego de escalas (norma cancelada)
NBR 8.402:1994 – Execução de caracter para escrita em desenho técnico – Procedimento
NBR 8.403:1994 – Aplicação de linhas em desenhos – Tipos de linhas – Larguras das linhas – Procedimento
NBR 10.067:1995 – Princípios gerais de representação em desenho técnico – Procedimento
NBR 10.068:1987 – Folha de desenho – Leiaute e dimensões – Padronização
NBR 10.126:1987 – Cotagem em desenho técnico – Procedimento
NBR 10.582:1988 – Apresentação de folha para desenho técnico – Procedimento
NBR 12.298:1995 – Representação de área de corte por meio de hachuras em desenho técnico – Procedimento
NBR 13.142:1999 – Desenho técnico – Dobramento de cópia (norma cancelada)
NBR 13.272:1999 – Desenho técnico – Elaboração das listas de itens
NBR 13.273:1999 – Desenho técnico – Referência a itens
NBR 13.441:1995 – Rochas e solos – Simbologia
Norma de tamanho de textos