Main news from version 15 to version 16. (See 'Detailed changes' for the full list of news).
General:

• Cloud models storage for logged users

• Utilities->Status: buttons to open common folders (temporary, user settings)
• Calculation do not require save with a name, its temporary folder is used for UNNAMED model
• File browser: allow zip/unzip.
• Html help disk size much smaller than previous versions
• Avoid GiD lock starting/ending if login server has problems to answer requests, and faster asynchronous start.
• Included problemtype interfaces Nastran, Abaqus and Ls-dyna that now don't require an extra Compass password.

• Change theme do not require restart GiD
• Black theme rebuilt using vectorial SVG images, to have better images with all theme sizes (small, medium, large,...), for high resolution screens

• New 'GiD White Vectorial' theme

• macOS: GiD build on macOS 10.15 Catalina, solved USB access problems.
• macOS retina support.

Pre-process

• Each geometry entity store its mesh (avoid re-mesh if was meshes, update the mesh if required, copy also the mesh when copy a geometry, etc.).
• IFC geometry format import (BIM standard format)

• Undo enhanced (redo, undo last command, use backup as starting point, not lost history saving model, copy commands from undo multiple window, etc.).
• Repair check contact volumes integrity, and do some repair in simple cases

Post-process:

• Plugin to export results in shapefile format (GIS)

• New option Convert Visible iso-surfaces to Cuts.
• Fix lack of memory bug with results cache
• Volume rendering: again functional and with some additions.
• Fixed bug when cutting multiple meshes.
• Corrected problem when importing multiple VTK files.
• HDF5 corrected some errors when reading and writing results.
• skipping steps when reading results: added option to read every X steps.

Customization:

• Tcl/Tk updated to 8.6.12 version
• windows: <GID>scripts/tk/demos/DEMO_widgets.vbs show a collection of tk widget demos and its source code
• linux and macOS: $GID/tk_widgets_demo script added to show a collection of tk widget demos and its source code.
• CustomLib
  • customlib problemtypes don't require embed used procs in the xml spd file.
  • correct_local_axes_with_lines command to modify assigned local axes based on the direction on some curves.
• New GiD-Tcl events:
  • GiD_Event_BeforeCalculate, GiD_Event_AfterReadPreferences, GiD_Event_AfterSavePreferences, GiD_Event_BeforeExit, GiD_Event_AfterDataManagerSetCloudFolder
• New Tcl commands:
  • GiD_AccessValueAssignedCondition ?-field_index? set|get <condition> <over> {<question>|<field_index> ?<value>? ... <question>|<field_index> ?<value>?} <entities>
  • GiD_GetUserSettingsCommonDirectory ?-create_folders? , return the main user GiD folder
  • GiD_Project backup save|read ?-ignore_must_save_flags? <name>
  • GiD_Mesh list face (e.g. "GiD_Mesh list -normals_dotprod_threshold -0.9 face" to identify problems)
• New Tcl sub-commands:
  • GiD_Info bounding_box new optional flags ?-geometry|-mesh|-post? ?-layers_off_also?
  • GiD_Info mesh nodes | elements new option -array2 : Instead of a plane list it returns the results as a list of objarrays (more efficient).
  • GiD_Info mesh -post -step_index $idx_step -set_name $name Elements $element (new optional flag -set_name $set_name)
  • GiD_Info mesh -post ?-step_index <idx_step>? ?-step_value <step_value>? (new optional flag '-step_value')
  • GiD_Info variables ?-mesh? ?-expand_array_names?
  • GiD_Info check surface <entity_id> selfintersection ?-tolerance <tolerance>? (new -tolerance optional flag)
  • GiD_Info check mesh contact_elements_connectivities, to check integrity of contact elements
  • GiD_Info postprocess get cur_step_index , to get the integer index of the current step
  • GiD_Groups get all_properties <group> and GiD_Layers get all_properties <layers>
  • GiD_Geometry get: new sub-options label_on | selected
  • GiD_Geometry edit point|line|surface|volume <num> material|label_on|selected <value>
  • GiD_Mesh get: new sub-options label_on | selected
  • GiD_Mesh edit node|element <num> material|label_on|selected <value>
  • GiD_Project transform_problemtype <new_problemtype>
  • GiD_Sets get command: new element_type and element_num_nnodes options to get these values
  • GiD_Result get new optional flag -ignore_no_result, to avoid the result values that are unset
• Packages:
  • package objarray new `-binary <data>` option
  • objarray foreach <var_name> <objarray> <body> to easy loop on all array values
  • Added Tcl package vfs
  • promise package added, to allow run asynchronous procs with promises and async/await syntax
  • tksvg package added, to support vectorial images with svg format (scalable vector graphics)
• New GiD variables ShowFigures(BoundingBoxLines), ShowFigures(BoundingBoxSurfaces), ShowFigures(BoundingBoxVolumes) to draw the bounding box of these entities.
• GidUtils::OpenWindow , GidUtils::CloseWindow , etc handle classic data windows.