Whiteboard

CoCalc provides a computational whiteboard with infinite canvas. Our web page All About Computational Whiteboard gives a quick visual tour of whiteboard features.

simple whiteboard with Pages and Search view

sample whiteboard with Pages and Search views open

Chat

Chat with collaborators. Open multiple chat boxes within the whiteboard as well as the usual CoCalc Side Chat for the entire whiteboard file. Learn about all the features of CoCalc Chat at this link: Chatrooms.

Keyboard shortcut to create Chat boxes: “C”.

example chat box and side chat in whiteboard

chat box and side chat in whiteboard

Collaborative Editing

Many users can edit at the same time, see what the others are doing in real time, and center their view at the location of another’s cursor.

Countdown Timers

Add stopwatches (count up) and timers (count down) to keep meetings and discussions on schedule.

stopwatches and timers

stopwatches and timers in whiteboard

Keyboard shortcut to create Stopwatches and Timers: “S”.

When a timer counts down to zero, a pop-up announcement will be displayed if the whiteboard file is open at the time.

timer expired pop-up

notification displayed when whiteboard timer expires

Cut or Copy and Paste

Click “Select” (arrow icon) then drag the cursor to create a rectangular region. Doing so will select all objects that lie partially or completely in the region. “Cut” removes all the objects from their current position and saves them to the clipboard. “Copy” keeps the objects in their current position and saves them to the clipboard. “Paste” will drop the group of objects in the clipboard into the current page or into any page of any whiteboard you have open.

select, cut or copy, and paste

cut, copy, paste in whiteboard

Keyboard shortcut to enable rectangular selection: “V”.

Edges

Create edges (arrows) between all objects.

Keyboard shortcut to create Edges: “E”.

Frames

Use frames to group objects and organize the whiteboard into sections.

Keyboard shortcut to create a Frame: “F”.

Hashtags

You can put hashtags on notes, e.g. #foo and search for those as well, or put - (minus sign) in front to exclude matching items from search, e.g. -#foo. You can search for regular expressions by enclosing them in slashes, for example /^# /.

Icons

Choose from a wide selection of Icons to add to your whiteboard.

Keyboard shortcut to open the table of available Icons: “I”.

Jupyter Cells

A CoCalc whiteboard can include Jupyter code cells. Whiteboard code cells allow:

  • over a dozen supported kernels

  • CoCalc’s massive library of pre-installed software

  • interactive widgets

  • execution order determined by a directed graph

whiteboard with two code cells and a sticky note

Keyboard shortcut to create a Jupyter Code Cell: “J”.

LaTeX Expressions

Text inside whiteboard items supports LaTeX mathematical typesetting.

Pages View

If you click the “Pages” icon: pages icon, the Pages panel appears.

pages icon in toolbar

pages icon in toolbar opens Pages view

There’s a button “+ New” that creates a new page. You can see previews of all your pages in the pages panel, and click a preview to jump to any page.

You can also see a page number in upper left of the main whiteboard, and click or edit to go to a page.

page number displayed at upper left

whiteboard is showing page 1 of 2

The Search panel is ordered by page number. Putting things in different pages imposes an ordering in the search.

Overview Map

Easily navigate with an overview map with two preview modes.

Pens

Choose one of the different pen shapes to draw freehand on your whiteboard. Supported pointing devices include most forms of mouse and trackpad as well as many Wacom tablets and iPencil and Apple Pencil.

Keyboard shortcut to start using Pens: “P”.

Publish

You can publish your whiteboards to the CoCalc share server.

Search View

By default, the search panel is open to the right for new whiteboards. You can also use the vertical toolbar at left and select the icon for the search panel: search icon.

search icon in toolbar

search icon in toolbar opens Search view

Search View of a whiteboard gives you a panel that lists all text, sticky notes and code in order, with a search box at the top. You can search for text and click on any matching item to center the whiteboard on it. The ordering of items in Search View is lexicographic by the (y,x) coordinates: items closer to the top are listed first; items at the same height are listed left to right.

Search view can make your whiteboards easier to manage as they get larger.

example search view of a whiteboard

Whiteboard, showing search view in right panel

Search view works well with to-do lists. To find all not done items, put "[ ]" (note the quotes) in the search box. To find all completed items, search for "[x]".

If you don’t see a menu choice for Search View in a current whiteboard, then refresh your browser, click the “split vertically” button (upper right), then click the dropdown that says “Whiteboard” and change it to “Search”.

Split Whiteboard Windows

Infinitely split whiteboard windows horizontally and vertically to view multiple parts of the whiteboard simultaneously.

Sticky Notes

A sticky note is a rectangle, with a colored background, for enclosing text. When creating a sticky note, it’s easy to select from a variety of eye-catching background colors and text fonts and sizes.

Keyboard shortcut to create a Sticky Note: “N”.

Stopwatches

Add stopwatches to the whiteboard to time activities and track work.

Table of Contents

You can view contents as an outline in a panel on the left and click to view any item instantly.

Text

A text box is a rectangle, with a transparent background, for enclosing text.

Keyboard shortcut to create a Text box: “T”.

TimeTravel

As with other native CoCalc applications, every change is recorded via browsable Time Travel You can see what changed, and who changed it, and copy/paste from any point in the history.

To-do Lists

In a sticky note, text, etc., you can mark action items by placing a pair of brackets in the item, preceded and followed by a space and with a space between the brackets. The item will be displayed with an empty checkbox. Click the checkbox when the item is done, or place an “x” between the brackets, and it will show as a checked item.


Note

At this time, the only way to export an image of all or part of a whiteboard is by taking a screenshot. Exporting a whiteboard to a pdf, png, or svg file is not yet implemented. See CoCalc issue #6024.

code for to-do list in a whiteboard sticky note

Code for an unchecked box and a checked box in a sticky note.

rendered list in a whiteboard sticky note

How the unchecked and checked boxes are displayed