[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"indicator-zlindicatorenvelope-fr":3},"# Zero Lag Indicator Envelope (ZLINDICATORENVELOPE)\n\n> StratCraft indicator page for a zero-lag indicator envelope.\n\n**Route**: `\u002Findicators\u002Fzlindicatorenvelope\u002F`\n\n## What It Does\n\nZLINDICATORENVELOPE surrounds the zero-lag indicator with upper and lower percentage bands.\n\n## Formula\n\n`Upper = ZLIndicator(period, gainlimit) * (1 + perc \u002F 100)` and `Lower = ZLIndicator(period, gainlimit) * (1 - perc \u002F 100)`\n\n## Parameters\n\n- `period` - default `30`\n- `gainlimit` - default `50`\n- `_movav` - default `EMA`\n- `perc` - default `2.5`\n\n## C++23 API\n\n```cpp\n#include \u003Cnonabt\u002Findicators\u002Fzlindicatorenvelope.hpp>\nauto zlEnvelope = std::make_unique\u003Cnonabt::ZLINDICATORENVELOPE>(data().close(), 30, 50, \"EMA\", 2.5);\n```\n\n## Common Usage\n\n- Use it to spot extension around the error-correcting baseline.\n- Pair it with crossovers or reversion triggers.\n- Helpful when you want a lag-reduced envelope for swing systems.\n"]