diff --git a/DEVELOPMENT.md b/DEVELOPMENT.md
index 5be4776..1fd1a2a 100644
--- a/DEVELOPMENT.md
+++ b/DEVELOPMENT.md
@@ -1,19 +1,23 @@
-this will describe how to generate the output file form the sources.
+this will describe how to generate the output files form the sources.
 
 requirements
 ============
 
-to be able to generate the outputs you need following software:
+to be able to generate the outputs, you need following software:
 
 - rake: the central script taking care of generating the output files (Makefile is too cumbersome to parse files)
 - [QEDA](http://qeda.org/): to generate footprints for the parts
-- [Lepton EDA](https://github.com/lepton-eda/lepton-eda): for the schematic capture
-- [pcb-rnd](http://repo.hu/projects/pcb-rnd/): for the board layout
-the output generation is automatized.
+- [KiCad](https://www.kicad.org/): EDA software used for schematic capture and board layout
+- [PcbDraw](https://github.com/yaqwsx/PcbDraw): to generate board layout rendering
+- [KiKit](https://github.com/yaqwsx/KiKit): to generate fabrications files (Gerber, Excellon)
+- [KiAuto](https://github.com/INTI-CMNB/KiAuto): to generate schematic printout (PDF)
+- [KiBoM](https://github.com/SchrodingersGat/KiBoM): to generate Bill of Material (CSV)
 
 compiling
 =========
 
+to generate schematic, BoM, board render, and fabrication output, run `rake`.
+
 library
 -------
 
@@ -38,18 +42,15 @@ to generate the parts:
 rake library
 ~~~
 
-this will use the parts definition (.yaml files) in the `library` to generate [gEDA gschem](http://wiki.geda-project.org/geda:gaf)/[Lepton EDA](https://github.com/lepton-eda/lepton-eda) symbols (.sym files) in the `geda/symbols` folder, and [coralEDA pcb-rnd](http://repo.hu/projects/pcb-rnd/) footprints (.lht files) in the `coraleda/subc` folder.
-
-only the QEDA parts in subfolders within `library` come from the [QEDA library](https://doc.qeda.org/library/), but the files are included in this project for simplicity and archiving purposes.
-all other parts are custom and written for this project.
+this will use the parts definition (.yaml files) in the `library` to generate the symbols (.sym files) and footprints used by KiCAD in the `kicad` folder.
 
 schematic
 ---------
 
-the `.sch` file is the schematic source file.
-it has been drawn using [Lepton EDA](https://github.com/lepton-eda/lepton-eda).
+the `.kicad_sch` file is the schematic source file.
+it has been drawn using the [KiCAD eeschema](https://www.kicad.org/) schematic editor.
 
-it uses standard symbols, and the ones in the `geda/symbols/` folder.
+it uses standard symbols, and the ones in the `kicad/` folder.
 most symbols are generated by QEDA as described above.
 
 to export as pdf:
@@ -68,15 +69,25 @@ rake bom
 board
 -----
 
-the `.lht` file is the board layout source file.
-it has been drawn using  [coralEDA pcb-rnd](http://repo.hu/projects/pcb-rnd/).
+the `.kicad_brd` file is the board layout source file.
+it has been drawn using the [KiCAD pcbnew](https://docs.kicad.org/6.0/en/pcbnew/pcbnew.html) PCB editor.
 
-it uses the symbols from the `coraleda/subc/` folder.
+it uses the footprints from the `kicad/` folder.
 most symbols are generated by QEDA as described above.
-`oshw_logo.lht` is just the Open Source Hardware Logo.
-it been generated from https://oshwlogo.cuvoodoo.info/.
 
 to export gerber files for PCB manufacturer (and photo preview + overview document):
 ~~~
 rake fabrication
 ~~~
+
+versioning
+----------
+
+the source schematic and board layout do not include version information.
+when generating schematic or board fabrication output, a copy of the source files with date and version information is done as `.versioned.` files.
+the date corresponds to the last changes (i.e. commit).
+the version is formatted as `v.r hhhhhhh`:
+
+- `v` corresponds to the major version information defined in `version`
+- `r` corresponds to the total number of changes done to the source files
+- `hhhhhhh` corresponds to the git hash of the commit used to generate the version information