ACIS is used to construct applications with hybrid modeling features, since it integrates wireframe model, surface, and solid modeling functionality with both manifold and non-manifold topology, and a rich set of geometric operations.

ACIS saves modeling information to external files which have an open format allowing external applications, even those not based on ACIS, access to the ACIS geometric model.

Also of importance to the development of CAD was the development of the B-rep solid modeling kernels ( engines for manipulating geometrically and topologically consistent 3D objects ) Parasolid ( ShapeData ) and ACIS ( Spatial Technology Inc .) at the end of the 1980s and beginning of the 1990s, both inspired by the work of Ian Braid.

The 3D ACIS Modeler ( ACIS ) is a 3D modelling kernel ( or engine ) owned by Spatial Corporation ( formerly Spatial Technology ).

ACIS is used by many software developers in industries such as computer-aided design ( CAD ), Computer-aided manufacturing ( CAM ), Computer-aided engineering ( CAE ), Architecture, engineering and construction ( AEC ), Coordinate-measuring machine ( CMM ), 3D animation, and shipbuilding.

ACIS provides software developers and manufacturers the underlying 3D modeling functionality.

; Advanced Covering: Advanced Covering is a feature of Deformable Modeling that is now available as a standalone add-on for the 3D ACIS Modeler.

; 3D PHL V5: 3D ACIS PHL V5 is a hidden line removal ( HLR ) solution from Spatial based on CATIA V5 technology.

3D ACIS PHL V5 is an ACIS-dependent development technology-an ACIS license is required.

* ACIS ( Alan, Charles, Ian's System ), a solid modelling geometric modeling kernel that several CAD packages use

Certain object types, including ACIS solids and regions, are not documented.

Instrument: ACIS.

*. SAT, ( Standard ACIS Text ), a file extension for ACIS CAD files

The basic information needed to understand the ACIS file format ( focusing on the reading, or restore, operation ), includes the structure of the save file format, how data is encapsulated, the types of data written, and subtypes and references.

Beginning with ACIS Release 6. 3, it is required that the product ID and units be populated for the file header before you can save a SAT file.

ACIS is currently being developed by Spatial.

They maintain the concept of a current version ( release ) number in ACIS, as well as a save version number.

The save version allows one to create a SAT save file that can be read by a previous version of ACIS.

Beginning with ACIS Release 4. 0, the SAT save file format does not change with minor releases, only with major releases.

This allows applications that are based upon the same major version of ACIS to exchange data without being concerned about the save version.

But there are, however, several features of Aristotle's approach which open the way for the moral measure of literature.

Free and open source software libraries have been created to support such features in a portable way, and are most notably found in the repositories of the Common-Lisp. net and Common Lisp Open Code Collection projects.

It was later upgraded to Mk II specifications with a 7. 0 liter ( 427ci ) engine and a standard four ratio Kar Kraft gearbox, however the car kept specific features such as its open roof and lightweight chassis.

This added footage features massive tidal waves, flooded valleys, and the ground splitting open swallowing up various huts.

For some reason, probably associated with local politics, he subsequently found himself unpopular in Halicarnassus and, sometime around 447 BC, he migrated to Periclean Athens, a city for whose people and democratic institutions he declares his open admiration ( V, 78 ) and where he came to know not just leading citizens such as the Alcmaeonids, a clan whose history features frequently in his writing, but also the local topography ( VI, 137 ; VIII, 52-5 ).

The open water is less-affected by shoreline features, such as wetlands, and more affected by nutrient levels that control the production of algae.

Ubisoft's 2009 historical fiction action-adventure open world stealth video game Assassin's Creed II ( Assassin's Creed series ) features Leonardo's version of the painting as a purchasable item in the Forli art merchant.

* Differences in culture and vision: Microsoft favored the open hardware system approach that contributed to its success on the PC ; IBM sought to use OS / 2 to drive sales of its own hardware, including systems that could not support the features Microsoft wanted.

The statue, including the pedestal and base, is closed until October 28, 2012, so that a secondary staircase and other safety features can be installed ; Liberty Island remains open.

A Chinese martial arts greeting features the right hand in a fist with the left hand open covering it with a slight nod of the head.

The deck consists of 81 cards varying in four features: number ( one, two, or three ); symbol ( diamond, tilde, oval ); shading ( solid, striped, or open ); and color ( red, green, or purple ).

The revived series ' TARDIS features no such secondary doors ; the police box doors open directly into the console room.

Other notable features include the open cluster NGC 6025 and planetary nebula NGC 5979.

Its notable features include NGC 6025, an open cluster with about 30 stars ranging from 7th to 9th magnitude.

But although Joy's vi was now once again available for BSD Unix, it arrived after the various BSD flavors had committed themselves to nvi, which provides a number of enhancements over traditional vi, and drops some of its legacy features ( such as open mode for editing one line at a time ).

Vim also has a vi compatibility mode, in which Vim is more compatible with vi than it would be otherwise, although some vi features, such as open mode, are missing in Vim, even in compatibility mode.

It is an open question whether these were also features characteristic of Virgil the man.

In addition, several times a year on selected Sundays at 5: 15pm, the St. James's Recital Series features performances by local musicians, pianists in particular ; recitals follow the 4pm Choral Evensong in St. James Chapel and are free and open to the public.

All three Mass cycles employ other early Tudor features, notably the mosaic of semichoir sections alternating with full sections in the four-part and five-part Masses, the use of a semichoir section to open the Gloria, Credo and Agnus Dei, and the head-motif which links the openings of all the movements of a cycle.

This allowed for new development on infill sites or on the edge of larger towns and villages, “ but preventing development in the open countryside and in designated areas such as green belts and Areas of Outstanding Natural Beauty .” In addition, opportunities for public participation in the planning process were also increased by the Act, partly in response to opposition to some features of urban housing and planning policies.

It features arid to subarid savanna, open woodland, and thickets that include frequently abundant underlying grasses.

The typeface features more open counter spaces.

L ' Aurore's front page on 13 January 1898 features Émile Zola's J ' accuse ( letter ) | open letter to the French President Félix Faure.

Like many of Garner's books, the novel is set in the real landscape of Cheshire, in this case focused around Alderley Edge, and features the fictional characters interacting at genuine sites, such as the sandstone escarpment of the Edge, the Wizard's Well, the open mine pits, and the Beacon.