Page where you see the grids of a given difficulty - OroshiX/Pentatonic GitHub Wiki
After clicking on a difficulty you arrive on a page where you can see most (all ?) of the grids of this difficulty. They are quite small, the aim is not to be able to see what they look like exactly from this page. They are represented as squares so it's normal if you can't see the totality of the grid.
So you see the grids as squares that are next together, like cells are in an actual grid. These squares are separated by dotted lines. These squares are of a given color, very pale. If you have started the Pentatonic (and have a saved ongoing version), it will be of the same color but less pale. If you have solved it, it won't be pale anymore, and some bold lines surrounding the cell will appear. We'll precise which lines just below. If possible it would be even better if the bold lines could glow, they could be glowing blue a bit like a laser sword, and not only instantly glowing, but progressively from left to right or top to bottom.
So, the cells (each one represents a grid) are themselves part of a bigger grid (let's call it supergrid), but when you start, the supergrid only has the outer lines that are bold, the inside lines are dotted. If you solve a cell/grid then the right and bottom lines become bold (but they only become bold if they are present in the super grid) There is a small example in the picture below, with different steps.
So in principle you don't see the name of the grid, but you can if you touch the cell for like 2 seconds, it appears (like hover text for xkcd)