Corbel
The lamp needed to hang out past the wall, over the bench, where no shelf could reach without a leg to stand on, and the floor below was already given over to the stacked wood. The girl thought a post must go up from the ground to carry it. Nyra set a hand flat on the cold stone and shook her head, for a wall can reach on its own if it is taught to.
She began to lay stones, each one bedded deep in the wall behind and let to stand out a little past the one below it. Course by course the small stones stepped into the open air, every reaching stone pinned under the weight of all the wall above and behind, so that none of them could tip or fall. There was no post beneath, and none was wanted. The wall itself leaned out and held, carrying the load on an arm it had grown from its own body.
When the ledge of stone stood finished, cool and square, the girl set the lamp upon it and watched it hold without a tremor. She pressed under the farthest stone and felt how little gave, though it hung out over nothing at all. The strength of the reaching part, Nyra told her, was only ever borrowed from the part bedded out of sight. What leaned into the open was carried by all the plain stone buried behind it.
A page does the same. A book gathers what can be set down in a line and counted, and leaves the rest to the one who was there. But sometimes a page must carry a thing that stands out past the plain record, a judgment or a tenderness or a meaning that reaches beyond the facts, with no proof set under it to prop it up. You corbel it. You bed it deep in everything you have already written plain, course on course of accounted things, until the weight of all that was set down holds the one unaccountable thing out where the reader needs it.
The lamp burned out past the wall now, lighting the bench where no floor could ever have held a post. The girl understood that the reaching thing was safe only because most of it stayed hidden, bedded in the plain courses behind. The book keeps the ledge, and you keep the corbelling of it.