Opening a document
Open, drag, from the system, from the address

The file menu with Open… under the pointer

The ways

HowWhat happens
Open… ⌘ Oreplaces the window's document; with unsaved changes it asks first. Opens .ja, .jaz, .json, .svg, .pdf, .dxf
Drag onto the canvassee Dropping files on the canvas
From the systemwith the app installed, "Open with" Janvas: one window per file (see Installing the app)
From the addressgraphic-editor.html?doc=…

The project name

A PDF, SVG or DXF gives the project the file name without the extension; a Janvas document keeps its saved name.

Which file is overwritten

After Open… of a .ja, .jaz or .json, Save overwrites the same file. An opened SVG, PDF or DXF is not overwritten: the first Save asks where to save the Janvas document.