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Synthiaโข User Manual for
SynthEyes 2026
(c)2014-2026 Boris FX, Inc.
ย
Introduction
The Synthia Window
Synthia Commands as a Script
Talking to Synthia
What Can Synthia Do?
Some Initial Examples
Areas of Competency
What Can I Say? Can I See All the Rules?
Rules
What's a Nonterminal?
Basic Parts of a Rule
Finding Rules
Defining Rules
Life of a Rule
Substitutions in "Means"
MetaObjects, MetaAttributes, and More
MetaObject
MetaAttribute
MetaValue
Named MetaValues
Getting a MetaAttribute's Current Value
Changing a MetaAttribute's Value
MetaVerbs: More Changes
Animated MetaAttributes
Adjective Forms: I'm Talking About You
Defining Adjectives
Put It Where?
Do It Like This: Procedures
Operating SynthEyes by 'Remote Control'
Rooms
Menu Commands
Windows
Rules, Herded About
Synthia and the Cloud
Who Am I?
House Rules
Rule Upgrades, and More
When Things Go Wrnggg
Sorry, I Can't Understand
Multiple Interpretations
Nothing Is Happening
Too Much Is Happening
Some Things We Haven't Told You About
Input Substitutions
MetaObject Hierarchy
Ambiguous Named Metavalues
Control Flow Statements
Events
Contexts
Mathematical and Selection Precedences
Marks
Future Lessons for Synthia
Appendix 1: Microphone and Speech Setup
Windows Setup
Windows Setup
Selecting a Voice
Synthesizer Pronunciation
OS X Setup
Linux Setup
"Do it now!" Control
Voice Output
Appendix 2: Answers to Exercises
Q: look at the right-click menu.
Q: Try the nice day example above, then control-up-arrow.
Q: What is camera01's field of view?
Q: Define stop loudly to stop playing and say the final frame number.
Q: What are the room names?
Q: How many colors are there?
Q: What is the plural of mesh? How does Synthia know?
Q: Try the obvious
Q: What nonterminal matches an outcome? What else matches it?
Q: Find some ways to minimize Synthia with rules using `LLhide`
Q: Find alternate forms with rules meaning shut down.
Q: How many rules have you created?
Q: define half time as click half speed instead. What is the left-hand nonterminal now?
Q: Make the sentence help me open Synthia's pdf manual.
Q: Create a rule that restores the current value of the scene's multiple export settings, so that you can create and switch among different sets.
Q: Where else might you want to use a variation on current value in the putback rule above?
Q: How can you delete the last rule you created, if it is wrong?
Q: Create a noisy lock verb, to lock a tracker then what's been done.
Q: How many metaattributes does a camera have?
Q: How can you talk about a vector at specific coordinates?
Q: Find the internal rules associated with a tracker's location.
Q: Find the possible values of a tracker's axis lock metaattribute.
Q: Make all trackers unlocked and farโbut a little quicker.
Q: Find all the hidden metaattributes, and how to hide one.
Q: List all the metaverbs
Q: What if you don't want to export some trackers?
Q: How do you set the value on one frame from a value on another?
Q: What does flash red and blue trackers really mean?
Q: What does flash trackers that are red and blue do?
Q: Find ten longest-lived trackers
Q: Short-lived trackers aren't as reliable; create an adjective to find them.
Q: Use a far tracker to position a distant light
Q: Make teapot 1 twice as far from the origin
Q: You made 10 teapots with Duplicate Mesh. Twist them 45 degrees.
Q: Define a rule to easily translate the whole scene by a vector.
Q: Check out the various forms of transform whole.
Q: Create a less redundant version using otherwise or return.
Q: Add a center tracker to be clicked in the middle of the favorites.
Q: Define your own multi-step procedure.
Q: Tell Synthia to reset to the Solver room if there is no current room.
Q: For illustration only, determine if it is a stereo shot via the Shot menu.
Q: What action id might be handy for a tea party?
Q: What does the sentence go! do?
Q: Create a mesh, open the Duplicate Mesh script, then look at its children.
Q: What's different if you then click control-up-arrow in the text entry window?
Q: Define a procedure to show all a window's children, and their children...
Q: How does click ok work? What effect can that have?
Q: Turn on Corners on the Summary Panel, regardless of its prior state.
Q: Click the Set Seed button on the Coordinates panel using its id.
Q: The better approach: define a procedure for Set Seed directly.
Q: Make an equivalent to create cones. Why is it less useful?
Q: Turn on the cloud system.
Q: Try the example just given.
Q: Find the synthia_my_rules.sia file and read what's in it.
Q: exit from Synthia, find synthia.xml, delete it, start Synthia, and watch the rebuild.
Q: Find the existing input substitutions
Q: Define input substitutions for a SynthEyes/Synthia word to correct common misspellings that are not valid words. Use the cloud!
Q: Anything in Synthia about cubes?
Q: What kinds of meshes are there?
Q: List all possible solvermodes.
Q: List all possible goldenvalues. How many are there really?
Q: Locate and use the additional forms of for each.
Q: Say the number of selected trackers when the selection changes.
Q: What are the rules for the os x context?
Q: What are synonyms for os x?
Q: Create snarky rules for what's under the hood? for each operating system.
Q: Delete those three rules.
Q: Write 1+2*3 to get 9 without changing the order of the numbers.
Q: How can you list private rules?
Q: Synthia contains magic. Find it.
Appendix 3: From the Trenches
Delete a GeoH Object But Not Its Children
Mo-Cap Retargeting
Selecting the Targets of All Links
Swapping Lock Coordinates
Flipping Lock Coordinates #2
Rotating Lock Coordinates #3
Rounding the Lock Coordinates #4
Setting Lock Distance
Export Only Some Random Trackers
Make a Tracker Stationary
Animate Object from Path on Mesh
Alignment Gags
Rescale a Mesh Via Tracker to Tracker Distance
Make a Jittery Camera Stand Still
Generate Sections of a Shot
Remove Constraints from Non-Seed Trackers
Convert Tracker Links to Constants
Copy Solved Roll Angle to GeoH Lock Roll Angle
Skip Several Frames in a Solve
ยฉ2026 Boris FX, Inc.ย โย UNOFFICIALย โย Converted from original PDF.
