Primary settings
Primary settings are settings that provide a large impact, and are the major settings that typically needed to consider when generating an image

prompts

Default: []
prompts are the most direct and most meaningful of settings - it is the text that is used to guide how the drawer generates images.
Multiple simultaneous prompts can be input, with the pipe/vertical bar character "|" as separation between prompts. For each prompt, it is possible to specify weight and when to stop optimizing for a prompt, with syntax like prompt:weight:stop. The weight is a constant multiple that enhances the importance and impact of a prompt to the generation, and between multiple prompts. The stop is for telling the drawer/optimizer when to stop optimizing for this particular prompt, often used in conjunction with a negative weight: this is because the possibility for making an image look like "not something" is quite easy, it just has to look like absolutely nothing. stop to some extent prevents that.
Usage:
Python
prompts="suicide at the brooklyn bridge | film noir"
prompts="Squid game| art by Hwang Dong-hyuk"
Command line
--prompts "seaside sunset| blue seas:3"
Examples: more in this imgur post - extremely helpful
prompt examples

aspect

Default: widescreen
aspect can be one of three: square, portrait, or widescreen. By specifying aspect, it automatically defines size for the user, where the one-to-one relationship is defined as follows:
'square' -> size=[144, 144] 'portrait'-> size=[128, 160] 'widescreen'-> size=[192, 108]
Recommended to use along with scale to increase size, note that quality automatically defines scale
aspect

drawer

Default: vqgan
The type of drawer defines what technology generates the images: vqgan uses VQGAN from taming-transformers, clipdraw and line_sketch all use diffvg, and pixel uses dribnet's original pixel drawer. the new diffusion drawer makes higher quality images (subjective), but needs more iterations that vqgan.
difference in style: pixel generates pixel art, vqgan generates GAN-images, which are often trippy or realistic, and clipdraw/line_sketch generates stroke-based images as if it was a drawing and strokes were drawn down.
drawer

quality

Default: normal
The quality parameter is able to give defaults to many different other arguments. In general, the better the quality, the larger the image, more CLIP models would be incorporated, more iterations it would run, and more batches would be run. This gives us an easier time to specify image quality.
Often, when testing a prompt or init_image or technique, start with "draft", and then go larger as testing progresses.
quality

iterations

Default: None
The name says it all, specify the number of iterations that a prompt would run with.
Typically for a prompt, 30 iterations would show the basic layout and focus, while from 100 on, the iterations may not change as much. Over 300 would have minimal effects.
Note: quality specifies iterations.

scale

Default: None
Use scale to increase size of output. The pixel size of the output is just aspect defaults multiplied by scale, size overrides scale. Scale need not be integer. Scale nor size does not effect pixel number of pixel drawer, or strokes of clipdraw drawer.