THREE HAND STITCHES
backstitch · running stitch · whipstitch — what shows on the face and what the thread does underneath
BIG-O NOTATION
the seven growth classes: how many steps, how long they take and how far each one lets you go
THE CRON EXPRESSION
the five schedule fields: what each one means, what values it takes, and how to read stars, lists and steps
GIT WORKING AREAS
four areas · the command that moves code between them
MARKDOWN SYNTAX
headings, emphasis, lists, links and code per the CommonMark 0.31.2 specification — the core all dialects share
REGULAR EXPRESSIONS
anchors, classes, quantifiers and groups: what a pattern is made of and how it reads, token by token
FIRST FINGER FOODS
the size, the softness and the shape of a piece for a baby who feeds themselves, by the NHS guidance
KINDS OF BASS
eight instruments at one scale · what each is about and how it sounds
AMP MIC POSITIONS
where to place a mic in front of a guitar cab and how each spot sounds — after the Shure chart
ACOUSTIC BODY SHAPES
what each one was made for · from the front room to the stage, at true scale
NOTES ON THE FRETBOARD
standard tuning E A D G B e · first twelve frets
STRING MATERIALS
what they are drawn from, how one wrap differs from another and what of that is audible
MICROPHONE TYPES
what picks the sound up and where it stays deaf — five patterns from one formula
THE SEVEN MUSICAL MODES
the same white keys · a different root
NOTE VALUES
from whole to thirty-second · how many fit a 4/4 bar
DADGAD
D — A — D — G — A — D
DROP D
one string down · everything else unchanged
HALF STEP DOWN
every string down a semitone · same shapes
OPEN C
the deepest of the open tunings
OPEN D
the open strings are already D major
OPEN G
the open strings are already G major
UKULELE CHORDS
the first twelve chords · standard tuning G C E A
CROCHET SYMBOLS
the standard chart symbols, abbreviations and US/UK name differences — per the Craft Yarn Council standards