Textures
Fine-tune, Shape, with Lines, Topography or Checkers picked
Three shapes make fine textures rather than a field of shapes: Lines, Topography and Checkers. They take your colours, Opacity, zones and Shuffle like any other shape, so a clear zone still fades them out behind your headline.
The three textures
Lines are parallel lines, straight or wavy, in any direction. Topography draws contour lines over a random landscape, like a map. Checkers are small squares on a checker grid. Picking one sets a fine scale and a line width that suit it, and going back to another shape puts back the scale you had. The Looks panel has one of each to start from: Diagonal lines, Wavy lines, Topography and Tiny checkers.
Scale
For a texture, Scale is the distance between lines, contours or squares, down to 4 pixels (10 for Topography). Line width and square size are a share of it, so a texture keeps its look as you scale it up or down. The Scale slider in the bar above the canvas covers the same range.
Line width
For Lines and Topography: how thick each line is, as a share of Scale. The hint under the slider gives the width in pixels.
Waviness
For Lines: how far each line swings, as a share of Scale. 0% is straight. Neighbouring lines wave together, so they never touch.
Wave length
For wavy Lines, so it shows once Waviness is above 0: the length of one wave, in multiples of Scale. The hint gives it in pixels.
Direction
For Lines: four buttons turn them across, diagonally up, down the page or diagonally down. Rotation, under More options, turns them to any other angle.
Topography
Contour lines of a random landscape, about Scale apart, like the height lines on a map. Where the land is steep the lines crowd together; on flat ground they spread out and close into loops. Shuffle, at the right of the bar above the canvas, draws a new landscape.
Square size
For Checkers: the side of each square, as a share of Scale. 25% gives the classic tiny checkers; 50% fills the gaps into a full checkerboard.
What textures leave out
Gap, Jitter, Corner radius, Fill (outlines) and Gradient fill per shape would break a line into pieces, so they are hidden while a texture is picked, and a texture draws without them. Size range and Rotation jitter, under Variation, still work, but they turn lines into dashes.
Repeating tiles
Lines and Checkers can also be exported as a small repeating tile for background-repeat: Use on my site, Code, then Repeating tile. Lines keep their direction in a tile when they run across, down or diagonally. A diagonal tile is a square chosen so its lines meet the next tile exactly; for wavy diagonal lines the tile may make the waves up to 3% longer or shorter to fit, and the dialog says when it does. At any other angle a tile's lines run across. Topography does not repeat, so it has no tile.
File size
A texture has many more marks than a field of shapes, so its SVG is larger: the four texture looks are 80 to 180 KB for a 1440 × 640 hero. The repeating tile is much smaller, and suits very fine Lines and Checkers best.