Disclosed is an electronic system for amending and studying codes of regulation, including an Internet-connected electronic device receiving amendments of texts from a server. The electronic device includes a display with a timeline highlighting the text modification dates, labeling the successful reading or the failure thereof with symbols and/or colors. The electronic device includes an electronic pen allowing supplementing the text with highlights, remarks, notes, external links, images, etc. The electronic pen includes the following buttons: “mode”, causing the reversible switching from a “highlighter” mode, to a “pen” mode, to an “eraser” mode; “timeline” to compare the different versions of the laws; “users” to view and share comments on the legislative texts with other users; “writing” to modify the writing settings and adapt the space available for the user for the remarks; and a tip to write with precision on the law texts and loaded documents.