Multimodal graffiti are constrained by the environment in which they are written and by the activities in which graffiti writing takes place. This article examines graffiti collected in Graffiti Park and Nam Van Lake Underground in Macao. The graffiti in the two sites display systematic differences in topics, objectives, subjects, affordance, texture and framing, which are attributed to varied activity types and the multimodality/materiality of public space. Specifically, those in Graffiti Park – a small and secluded area – are products of one-off activities attended by professional writers, ordinary citizens and tourists. Nam Van Lakeside has a more visible space, and yet the graffiti there – largely murals painted by a few commissioned writers – display limited topics/themes under institutional appropriation. The materiality of the wall space also contributes to the variations in styles and contents of graffiti in the two sites.

多模式涂鸦受到其书写环境和书写活动的限制。本文考察了在澳门涂鸦公园和南范湖地下收集的涂鸦。这两个站点上的涂鸦在主题，目的，主题，承受能力，纹理和框架方面显示出系统的差异，这归因于活动类型的变化以及公共空间的多种形式/重要性。具体地说，涂鸦公园（一个僻静的小区域）中的那些是一次由专业作家，普通市民和游客参加的一次性活动的产品。Nam Van Lakeside具有更明显的空间，但是那里的涂鸦（主要是一些委托作家创作的壁画）在机构拨款下显示的主题/主题有限。