diff --git a/papers/doc/effects.md b/papers/doc/effects.md
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-# effect list
-
-most of the effect numbers are from ProTracker/FastTracker 2.
-however, effects are continuous, which means you only need to type it once and then stop it with an effect value of `00`.
-
-- `00xy`: arpeggio. after using this effect the channel will rapidly switch between `note`, `note+x` and `note+y`.
-- `01xx`: slide up.
-- `02xx`: slide down.
-- `03xx`: note portamento.
-  - a note must be present for this effect to work.
-- `04xy`: vibrato. `x` is the speed, while `y` is the depth.
-  - maximum vibrato depth is ±1 semitone.
-- `07xy`: tremolo. `x` is the speed, while `y` is the depth.
-  - maximum tremolo depth is -60 volume steps.
-- `08xy`: set panning. `x` is the left channel and `y` is the right one.
-  - not all systems support this effect.
-- `09xx`: set speed 1.
-- `0Axy`: volume slide.
-  - if `x` is 0 then this is a slide down.
-  - if `y` is 0 then this is a slide up.
-- `0Bxx`: jump to pattern.
-- `0Cxx`: retrigger note every `xx` ticks.
-  - this effect is not continuous.
-- `0Dxx`: jump to next pattern.
-- `0Fxx`: set speed 2.
-
-- `9xxx`: set sample position to `xxx`\*0x100.
-  - not all systems support this effect.
-
-- `Cxxx`: change song Hz.
-  - `xxx` may be from `000` to `3ff`.
-
-- `E0xx`: set arpeggio tick.
-  - this sets the number of ticks between arpeggio values.
-- `E1xy`: note slide up. `x` is the speed, while `y` is how many semitones to slide up.
-- `E2xy`: note slide down. `x` is the speed, while `y` is how many semitones to slide down.
-- `E3xx`: set vibrato direction. `xx` may be one of the following:
-  - `00`: up and down.
-  - `01`: up only.
-  - `02`: down only.
-- `E4xx`: set vibrato range in 1/16th of a semitone.
-- `E5xx`: set pitch. `80` is 0 cents.
-  - range is ±1 semitone.
-- `EAxx`: toggle legato.
-- `EBxx`: set sample bank.
-  - does not apply on Amiga.
-- `ECxx`: note off after `xx` ticks.
-- `EDxx`: delay note by `xx` ticks.
-- `EExx`: send external command.
-  - this effect is currently incomplete.
-- `EFxx`: add or subtract global pitch.
-  - this effect is rather weird. use with caution.
-  - `80` is center.
-- `F0xx`: change song Hz by BPM value.
-- `F1xx`: single tick slide up.
-- `F2xx`: single tick slide down.
-- `F3xx`: fine volume slide up (64x slower than `0Axy`).
-- `F4xx`: fine volume slide down (64x slower than `0Axy`).
-- `F8xx`: single tick volume slide up.
-- `F9xx`: single tick volume slide down.
-- `FAxy`: fast volume slide (4x faster than `0Axy`).
-  - if `x` is 0 then this is a slide down.
-  - if `y` is 0 then this is a slide up.
-- `FFxx`: end of song/stop playback.
-
-additionally each system has its own effects. [click here for more details](../7-systems/README.md).