Can't get rulers to display

Hey again, sorry for all the posts today. Hopefully this is an easy one. I can’t find rulers (to make guides with) anywhere in the app, Command R doesn’t do anything and using the search bar in the Help tab only reveals the ability to hide or show existing guides. I’m on 3.0.4.

Page 30 of the Glyphs Manual tells you all about Guidelines. The link for it:

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Magnetic Guides

When dragging a node selection across the canvas, red lines will appear, indicating when the selection is aligned with other nodes or a vertical metric. Deactivate magnetic guides temporarily by holding down the Control key.

Likewise, a node or any other object being dragged will snap to all nodes and handles on paths, as well as in components. When moving close to a node in a component while dragging, Glyphs will fade in small
representations of the nodes inside the component. Disable node snapping by holding down the Control key.

Local & Global Guides

Add a local guide to the currently displayed glyph layer by Control-clicking or right-clicking to open the context menu and choosing Add Guide.

Pro Tip: Quickly create a guide using the Measurement tool measurement-tool-secondary by simultaneously holding down Command-Option-Control and pressing the G key after starting to drag a measurement line.

A local horizontal guide guide-local-horizontal will be added at the click position. If two nodes are selected while adding the guide, it will be laid through the nodes. Toggle the display of guides in Edit View by choosing View > Show Guides (Command-Shift-L).

Select a guide by clicking anywhere on it. A filled knob indicates a selected guide. Move a selected guide by dragging its knob. Double-click the knob to turn it perpendicular guide-local-vertical to its current orientation. Quickly duplicate one or more guides by selecting them and holding down the Option key while dragging them to a new position.

Local guides are blue and visible only on the layer on which they have been placed. Global guides guide-global-horizontal are red and visible throughout a master. Create a global guide by holding down the Option key while navigating the context menu and choose Add Global Guide. Toggle a guide between local and global by selecting it, and from the context menu, choose Make Global Guide or Make Local Guide.

Lock one or more guides by choosing Lock Guides from their context menu. A locked guide cannot be selected and displays a lockguide-local-horizontal-locked/guide-global-horizontal-locked icon instead of its knob. Unlock a guide by Control-clicking or right-clicking the knob and choosing Unlock Guide from the context menu.

From top to bottom (unselected and selected): local guide, global guide, locked local guide, locked global guide.

Press the Tab key to quickly select the next or Shift-Tab to select the previous guide. When a guide is selected, move it using the arrow keys (add Shift or Command for larger increments) or drag its knob with the mouse, just like a regular node.

Change the angle by dragging the guide anywhere outside the knob. Enter values for its position and its angle in the Info box (Command-Shift-I). Click the lock lock-locked icon next to the angle in the Info box to maintain the guide at the set angle until the angle is unlocked lock-unlocked again.

By default, a guide will be positioned relative to the left sidebearing. Click alignment-right in the Info box to position it relative to the right sidebearing or alignment-center to position it relative to both sidebearings. Click alignment-left to use the left sidebearing again. This can be useful for slanted guides, especially when they are global or when the right sidebearing is frequently changed.

Select a guide and click the measurement measurement-tool-secondary icon in the Info box to turn the guide into a measurement guide.

Tip: Use View > Show Metrics Names to label the vertical metrics. No guides are needed.

Click Name in the Info box of a selected guide to name it. Guide names are displayed on the left end of a guide:

Global guides are shown on all glyphs by default. Select a global guide and choose Edit > Info for Selection (Command-Option-I) to limit the global guide to a subset of glyphs. The rules for defining the scope of a global guide work the same as smart filters.