Welcome,
here's first community post for LVL Edit users. LVL Edit 0.6 looks like  this at the moment:
After some break I decided to make some big changes to improve usability of LVL Edit.
New:
 - Library: files and folders support
 - Library: loading to memory only selected materials
 - Alignment: more intuitive axis alignement preview
 - Preferences > Viewport: Ability to set Linear Filtering for materials 
- Start and End Points limit to 1
 - Paint Mode: added cursor icons for each tool
- Spritesheet Editor: center view button
 - Spritesheet Editor: tool for counting spritesheet cols and rows
 - Spritesheet Editor: hold spacebar and left mouse button to move around work area
 - Entity Outliner: now displays number of objects
 - Preferences > Advanced: ability to choose different backgrounds for Entity Outliner
 - Preferences > Preview: creates a config file for FPP Example to show currently opened level
 
Bug fixed:
 - Viewport highlight bug after closing LVL Edit preferences
 - Particles: sphere type parameters fix
 - Particles: limit only to working types
 - Particles: value fields update with enter key and other fixes
 - Fog detection on scene fix (new count fog events)
 - Tools panel cleanup and fixes
 - Entity Outliner: now displays list of maximum 15 objects
 - Entity Outliner: smarter reload objects list after loading level
 - Water fix (added six presets to choose from)
 - Water auto texture repeat X (repeat Y not working yet)
 - Material panel: edit boxes lose focus when chceckbox clicked
 - Look At now works for static meshes, water and animeshes
 - Show/hide wireframe on selection fix
 - Recent Files fix
Shortcuts: - Shortcuts: +/- key to move gridmarker up/down - Shortcuts: spritesheet editor spacebar +
FPP Example:
 - Working with import.ini file
- Movement: jump added
- Back to start position
 - Fog support
 - Mesh loading fixes
- Particles support
 - Bullets (work in progress)
- Spritesheet support (work in progress)
